diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentation.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentation.cs
index cc89229ecd2..913f1408fa3 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentation.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentation.cs
@@ -13,8 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
-using System;
-using System.Collections.Generic;
 using OpenTelemetry.Instrumentation.AspNetCore.Implementation;
 
 namespace OpenTelemetry.Instrumentation.AspNetCore
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationOptions.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationOptions.cs
index 9c51fb5eb25..f134acb0d88 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationOptions.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreInstrumentationOptions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics;
 using Microsoft.AspNetCore.Http;
 
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetrics.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetrics.cs
index eb947b9f7db..d1a91d589ac 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetrics.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetrics.cs
@@ -14,8 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
 using System.Diagnostics.Metrics;
 using System.Reflection;
 using OpenTelemetry.Instrumentation.AspNetCore.Implementation;
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetricsInstrumentationOptions.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetricsInstrumentationOptions.cs
index e43b7db331b..a7819d55f32 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetricsInstrumentationOptions.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/AspNetCoreMetricsInstrumentationOptions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics;
 using Microsoft.AspNetCore.Http;
 
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/AspNetCoreInstrumentationEventSource.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/AspNetCoreInstrumentationEventSource.cs
index b78ab6953d0..d830208923d 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/AspNetCoreInstrumentationEventSource.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/AspNetCoreInstrumentationEventSource.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics.Tracing;
 using OpenTelemetry.Internal;
 
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs
index 836a24deb19..9300b651642 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs
@@ -14,10 +14,7 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
-using System.Linq;
 using System.Reflection;
 #if !NETSTANDARD2_0
 using System.Runtime.CompilerServices;
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInMetricsListener.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInMetricsListener.cs
index 988c4a73eca..8300a536242 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInMetricsListener.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInMetricsListener.cs
@@ -14,8 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Diagnostics.Metrics;
 using Microsoft.AspNetCore.Http;
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/MeterProviderBuilderExtensions.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/MeterProviderBuilderExtensions.cs
index 376bf86097d..c02f9975073 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/MeterProviderBuilderExtensions.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/MeterProviderBuilderExtensions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using OpenTelemetry.Instrumentation.AspNetCore;
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj b/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj
index 2c6190af39f..81cde3fb4c2 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/OpenTelemetry.Instrumentation.AspNetCore.csproj
@@ -8,7 +8,6 @@
 
     <!-- this is temporary. will remove in future PR. -->
     <Nullable>disable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/OpenTelemetry.Instrumentation.AspNetCore/TracerProviderBuilderExtensions.cs b/src/OpenTelemetry.Instrumentation.AspNetCore/TracerProviderBuilderExtensions.cs
index 47b20857d78..0814cd4b0d6 100644
--- a/src/OpenTelemetry.Instrumentation.AspNetCore/TracerProviderBuilderExtensions.cs
+++ b/src/OpenTelemetry.Instrumentation.AspNetCore/TracerProviderBuilderExtensions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 #if NET7_0_OR_GREATER
 using System.Diagnostics;
 #endif
diff --git a/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentation.cs b/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentation.cs
index df827346111..1e970678603 100644
--- a/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentation.cs
+++ b/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentation.cs
@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
-using System;
 using OpenTelemetry.Instrumentation.GrpcNetClient.Implementation;
 
 namespace OpenTelemetry.Instrumentation.GrpcNetClient
diff --git a/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentationOptions.cs b/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentationOptions.cs
index 8a055128b03..d03c882aa6f 100644
--- a/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentationOptions.cs
+++ b/src/OpenTelemetry.Instrumentation.GrpcNetClient/GrpcClientInstrumentationOptions.cs
@@ -14,9 +14,7 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics;
-using System.Net.Http;
 
 namespace OpenTelemetry.Instrumentation.GrpcNetClient
 {
diff --git a/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcClientDiagnosticListener.cs b/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcClientDiagnosticListener.cs
index 179831d2a67..73b7cd98f6f 100644
--- a/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcClientDiagnosticListener.cs
+++ b/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcClientDiagnosticListener.cs
@@ -14,9 +14,7 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics;
-using System.Net.Http;
 using System.Reflection;
 using OpenTelemetry.Context.Propagation;
 using OpenTelemetry.Instrumentation.Http;
diff --git a/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcInstrumentationEventSource.cs b/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcInstrumentationEventSource.cs
index c171c21c59b..e16c76b8f3c 100644
--- a/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcInstrumentationEventSource.cs
+++ b/src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcInstrumentationEventSource.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics.Tracing;
 using OpenTelemetry.Internal;
 
diff --git a/src/OpenTelemetry.Instrumentation.GrpcNetClient/OpenTelemetry.Instrumentation.GrpcNetClient.csproj b/src/OpenTelemetry.Instrumentation.GrpcNetClient/OpenTelemetry.Instrumentation.GrpcNetClient.csproj
index 5475e389fbc..08a03911108 100644
--- a/src/OpenTelemetry.Instrumentation.GrpcNetClient/OpenTelemetry.Instrumentation.GrpcNetClient.csproj
+++ b/src/OpenTelemetry.Instrumentation.GrpcNetClient/OpenTelemetry.Instrumentation.GrpcNetClient.csproj
@@ -8,7 +8,6 @@
 
     <!-- this is temporary. will remove in future PR. -->
     <Nullable>disable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/OpenTelemetry.Instrumentation.GrpcNetClient/TracerProviderBuilderExtensions.cs b/src/OpenTelemetry.Instrumentation.GrpcNetClient/TracerProviderBuilderExtensions.cs
index d53c1421910..d2223e63fe9 100644
--- a/src/OpenTelemetry.Instrumentation.GrpcNetClient/TracerProviderBuilderExtensions.cs
+++ b/src/OpenTelemetry.Instrumentation.GrpcNetClient/TracerProviderBuilderExtensions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using OpenTelemetry.Instrumentation.GrpcNetClient;
diff --git a/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentation.cs b/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentation.cs
index 4c7a42a0cb4..c7ffe545f21 100644
--- a/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentation.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentation.cs
@@ -13,7 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
-using System;
 using OpenTelemetry.Instrumentation.Http.Implementation;
 
 namespace OpenTelemetry.Instrumentation.Http
diff --git a/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentationOptions.cs b/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentationOptions.cs
index a4ef77bdb53..193b2141b13 100644
--- a/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentationOptions.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/HttpClientInstrumentationOptions.cs
@@ -14,10 +14,11 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics;
 using System.Net;
+#if NETFRAMEWORK
 using System.Net.Http;
+#endif
 using System.Runtime.CompilerServices;
 using OpenTelemetry.Instrumentation.Http.Implementation;
 
diff --git a/src/OpenTelemetry.Instrumentation.Http/HttpClientMetrics.cs b/src/OpenTelemetry.Instrumentation.Http/HttpClientMetrics.cs
index 27b39f5da17..e48af04a625 100644
--- a/src/OpenTelemetry.Instrumentation.Http/HttpClientMetrics.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/HttpClientMetrics.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics.Metrics;
 using System.Reflection;
 using OpenTelemetry.Instrumentation.Http.Implementation;
diff --git a/src/OpenTelemetry.Instrumentation.Http/HttpRequestMessageContextPropagation.cs b/src/OpenTelemetry.Instrumentation.Http/HttpRequestMessageContextPropagation.cs
index 14b26850e97..3f8d3ece0e3 100644
--- a/src/OpenTelemetry.Instrumentation.Http/HttpRequestMessageContextPropagation.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/HttpRequestMessageContextPropagation.cs
@@ -14,9 +14,9 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
+#if NETFRAMEWORK
 using System.Net.Http;
+#endif
 
 namespace OpenTelemetry.Instrumentation.Http
 {
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerDiagnosticListener.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerDiagnosticListener.cs
index f2ac51c6432..a60049eb939 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerDiagnosticListener.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerDiagnosticListener.cs
@@ -14,11 +14,11 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics;
+#if NETFRAMEWORK
 using System.Net.Http;
+#endif
 using System.Reflection;
-using System.Threading.Tasks;
 using OpenTelemetry.Context.Propagation;
 using OpenTelemetry.Trace;
 
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
index c1924529108..79cb2c86153 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpHandlerMetricsDiagnosticListener.cs
@@ -14,10 +14,11 @@
 // limitations under the License.
 // </copyright>
 
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Diagnostics.Metrics;
+#if NETFRAMEWORK
 using System.Net.Http;
+#endif
 using OpenTelemetry.Trace;
 
 namespace OpenTelemetry.Instrumentation.Http.Implementation
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpInstrumentationEventSource.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpInstrumentationEventSource.cs
index a0a5e6fa967..862348a94b1 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpInstrumentationEventSource.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpInstrumentationEventSource.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics.Tracing;
 using OpenTelemetry.Internal;
 
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpTagHelper.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpTagHelper.cs
index 6616029ef4e..83d7ea0aedc 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpTagHelper.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpTagHelper.cs
@@ -13,9 +13,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
-using System;
 using System.Collections.Concurrent;
+#if NETFRAMEWORK
 using System.Net.Http;
+#endif
 
 namespace OpenTelemetry.Instrumentation.Http.Implementation
 {
diff --git a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs
index b011719cb6f..c1c20ac9218 100644
--- a/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/Implementation/HttpWebRequestActivitySource.netfx.cs
@@ -15,9 +15,7 @@
 // </copyright>
 
 #if NETFRAMEWORK
-using System;
 using System.Collections;
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Net;
 using System.Reflection;
diff --git a/src/OpenTelemetry.Instrumentation.Http/OpenTelemetry.Instrumentation.Http.csproj b/src/OpenTelemetry.Instrumentation.Http/OpenTelemetry.Instrumentation.Http.csproj
index 724b901f9ff..ff3eece862e 100644
--- a/src/OpenTelemetry.Instrumentation.Http/OpenTelemetry.Instrumentation.Http.csproj
+++ b/src/OpenTelemetry.Instrumentation.Http/OpenTelemetry.Instrumentation.Http.csproj
@@ -9,7 +9,6 @@
 
     <!-- this is temporary. will remove in future PR. -->
     <Nullable>disable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/OpenTelemetry.Instrumentation.Http/TracerProviderBuilderExtensions.cs b/src/OpenTelemetry.Instrumentation.Http/TracerProviderBuilderExtensions.cs
index c900da51f61..02415dfe160 100644
--- a/src/OpenTelemetry.Instrumentation.Http/TracerProviderBuilderExtensions.cs
+++ b/src/OpenTelemetry.Instrumentation.Http/TracerProviderBuilderExtensions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using OpenTelemetry.Instrumentation.Http;
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlActivitySourceHelper.cs b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlActivitySourceHelper.cs
index fbf4fb7d83a..271a9417f7f 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlActivitySourceHelper.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlActivitySourceHelper.cs
@@ -13,8 +13,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Reflection;
 using OpenTelemetry.Trace;
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientDiagnosticListener.cs b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientDiagnosticListener.cs
index b383ab03896..8849f218b72 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientDiagnosticListener.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientDiagnosticListener.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 #if !NETFRAMEWORK
-using System;
 using System.Data;
 using System.Diagnostics;
 using OpenTelemetry.Trace;
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientInstrumentationEventSource.cs b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientInstrumentationEventSource.cs
index 31a7a9737bf..4afdbac2da1 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientInstrumentationEventSource.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlClientInstrumentationEventSource.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Diagnostics.Tracing;
 using OpenTelemetry.Internal;
 
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlEventSourceListener.netfx.cs b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlEventSourceListener.netfx.cs
index c2065174776..a06c77c428c 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlEventSourceListener.netfx.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/Implementation/SqlEventSourceListener.netfx.cs
@@ -15,7 +15,6 @@
 // </copyright>
 
 #if NETFRAMEWORK
-using System;
 using System.Diagnostics;
 using System.Diagnostics.Tracing;
 using OpenTelemetry.Trace;
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/OpenTelemetry.Instrumentation.SqlClient.csproj b/src/OpenTelemetry.Instrumentation.SqlClient/OpenTelemetry.Instrumentation.SqlClient.csproj
index a986f0ebfcf..d800a38d9c9 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/OpenTelemetry.Instrumentation.SqlClient.csproj
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/OpenTelemetry.Instrumentation.SqlClient.csproj
@@ -9,7 +9,6 @@
 
     <!-- this is temporary. will remove in future PR. -->
     <Nullable>disable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentation.cs b/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentation.cs
index bd6ecbe1238..380d70b20fb 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentation.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentation.cs
@@ -13,10 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
-using System;
-#if !NETFRAMEWORK
-using System.Collections.Generic;
-#endif
+
 using OpenTelemetry.Instrumentation.SqlClient.Implementation;
 
 namespace OpenTelemetry.Instrumentation.SqlClient
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentationOptions.cs b/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentationOptions.cs
index 121fed50b81..fdb0e29eff4 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentationOptions.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/SqlClientInstrumentationOptions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Collections.Concurrent;
 using System.Data;
 using System.Diagnostics;
diff --git a/src/OpenTelemetry.Instrumentation.SqlClient/TracerProviderBuilderExtensions.cs b/src/OpenTelemetry.Instrumentation.SqlClient/TracerProviderBuilderExtensions.cs
index a12ae44c884..2279e97f5fc 100644
--- a/src/OpenTelemetry.Instrumentation.SqlClient/TracerProviderBuilderExtensions.cs
+++ b/src/OpenTelemetry.Instrumentation.SqlClient/TracerProviderBuilderExtensions.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using OpenTelemetry.Instrumentation.SqlClient;
 using OpenTelemetry.Instrumentation.SqlClient.Implementation;
 using OpenTelemetry.Internal;
diff --git a/src/OpenTelemetry.Shims.OpenTracing/OpenTelemetry.Shims.OpenTracing.csproj b/src/OpenTelemetry.Shims.OpenTracing/OpenTelemetry.Shims.OpenTracing.csproj
index 5b7e1a27a48..d8070e7f7a6 100644
--- a/src/OpenTelemetry.Shims.OpenTracing/OpenTelemetry.Shims.OpenTracing.csproj
+++ b/src/OpenTelemetry.Shims.OpenTracing/OpenTelemetry.Shims.OpenTracing.csproj
@@ -12,7 +12,6 @@
 
     <!-- this is temporary. will remove in future PR. -->
     <Nullable>disable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/OpenTelemetry.Shims.OpenTracing/ScopeManagerShim.cs b/src/OpenTelemetry.Shims.OpenTracing/ScopeManagerShim.cs
index 0617a16cbe7..2984d3e7e38 100644
--- a/src/OpenTelemetry.Shims.OpenTracing/ScopeManagerShim.cs
+++ b/src/OpenTelemetry.Shims.OpenTracing/ScopeManagerShim.cs
@@ -14,11 +14,7 @@
 // limitations under the License.
 // </copyright>
 
-using System;
 using System.Runtime.CompilerServices;
-#if DEBUG
-using System.Threading;
-#endif
 using OpenTelemetry.Internal;
 using OpenTelemetry.Trace;
 using OpenTracing;
diff --git a/src/OpenTelemetry.Shims.OpenTracing/SpanBuilderShim.cs b/src/OpenTelemetry.Shims.OpenTracing/SpanBuilderShim.cs
index 5cdbe55e85d..0c42afc6186 100644
--- a/src/OpenTelemetry.Shims.OpenTracing/SpanBuilderShim.cs
+++ b/src/OpenTelemetry.Shims.OpenTracing/SpanBuilderShim.cs
@@ -14,8 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
 using OpenTelemetry.Internal;
 using OpenTelemetry.Trace;
 using OpenTracing;
diff --git a/src/OpenTelemetry.Shims.OpenTracing/SpanContextShim.cs b/src/OpenTelemetry.Shims.OpenTracing/SpanContextShim.cs
index 48e7c3dc28b..4b3d979cddd 100644
--- a/src/OpenTelemetry.Shims.OpenTracing/SpanContextShim.cs
+++ b/src/OpenTelemetry.Shims.OpenTracing/SpanContextShim.cs
@@ -14,8 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
 using OpenTracing;
 
 namespace OpenTelemetry.Shims.OpenTracing
diff --git a/src/OpenTelemetry.Shims.OpenTracing/SpanShim.cs b/src/OpenTelemetry.Shims.OpenTracing/SpanShim.cs
index 0ce964a3302..a50d5ff0892 100644
--- a/src/OpenTelemetry.Shims.OpenTracing/SpanShim.cs
+++ b/src/OpenTelemetry.Shims.OpenTracing/SpanShim.cs
@@ -14,9 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using OpenTelemetry.Internal;
 using OpenTelemetry.Trace;
 using OpenTracing;
diff --git a/src/OpenTelemetry.Shims.OpenTracing/TracerShim.cs b/src/OpenTelemetry.Shims.OpenTracing/TracerShim.cs
index 906d78315f8..f2a3c476cc4 100644
--- a/src/OpenTelemetry.Shims.OpenTracing/TracerShim.cs
+++ b/src/OpenTelemetry.Shims.OpenTracing/TracerShim.cs
@@ -14,7 +14,6 @@
 // limitations under the License.
 // </copyright>
 
-using System.Collections.Generic;
 using OpenTelemetry.Context.Propagation;
 using OpenTelemetry.Internal;
 using OpenTracing.Propagation;
diff --git a/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceListener.cs b/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceListener.cs
index 9e8f68c2498..d1344d6b04e 100644
--- a/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceListener.cs
+++ b/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceListener.cs
@@ -14,10 +14,12 @@
 // limitations under the License.
 // </copyright>
 
+#pragma warning disable IDE0005 // Temporarily suppressing "Using directive is unnecessary" until other projects have been updated. See #3958.
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using OpenTelemetry.Internal;
+#pragma warning restore IDE0005
 
 namespace OpenTelemetry.Instrumentation
 {
diff --git a/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceSubscriber.cs b/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceSubscriber.cs
index a1bc100585f..4a980123a1c 100644
--- a/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceSubscriber.cs
+++ b/src/OpenTelemetry/DiagnosticSourceInstrumentation/DiagnosticSourceSubscriber.cs
@@ -13,11 +13,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // </copyright>
+
+#pragma warning disable IDE0005 // Temporarily suppressing "Using directive is unnecessary" until other projects have been updated. See #3958.
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Threading;
 using OpenTelemetry.Internal;
+#pragma warning restore IDE0005
 
 namespace OpenTelemetry.Instrumentation
 {
diff --git a/src/OpenTelemetry/DiagnosticSourceInstrumentation/InstrumentationEventSource.cs b/src/OpenTelemetry/DiagnosticSourceInstrumentation/InstrumentationEventSource.cs
index 6e1760bfccd..2b7f8905e5a 100644
--- a/src/OpenTelemetry/DiagnosticSourceInstrumentation/InstrumentationEventSource.cs
+++ b/src/OpenTelemetry/DiagnosticSourceInstrumentation/InstrumentationEventSource.cs
@@ -14,9 +14,11 @@
 // limitations under the License.
 // </copyright>
 
+#pragma warning disable IDE0005 // Temporarily suppressing "Using directive is unnecessary" until other projects have been updated. See #3958.
 using System;
 using System.Diagnostics.Tracing;
 using OpenTelemetry.Internal;
+#pragma warning restore IDE0005
 
 namespace OpenTelemetry.Instrumentation
 {
diff --git a/src/OpenTelemetry/DiagnosticSourceInstrumentation/PropertyFetcher.cs b/src/OpenTelemetry/DiagnosticSourceInstrumentation/PropertyFetcher.cs
index 6c1657fe657..834ce740dbd 100644
--- a/src/OpenTelemetry/DiagnosticSourceInstrumentation/PropertyFetcher.cs
+++ b/src/OpenTelemetry/DiagnosticSourceInstrumentation/PropertyFetcher.cs
@@ -14,10 +14,12 @@
 // limitations under the License.
 // </copyright>
 
+#pragma warning disable IDE0005 // Temporarily suppressing "Using directive is unnecessary" until other projects have been updated. See #3958.
 using System;
 using System.Linq;
 using System.Reflection;
 using OpenTelemetry.Internal;
+#pragma warning restore IDE0005
 
 namespace OpenTelemetry.Instrumentation
 {
diff --git a/src/OpenTelemetry/Internal/ActivityInstrumentationHelper.cs b/src/OpenTelemetry/Internal/ActivityInstrumentationHelper.cs
index 4e527812f31..2176574e479 100644
--- a/src/OpenTelemetry/Internal/ActivityInstrumentationHelper.cs
+++ b/src/OpenTelemetry/Internal/ActivityInstrumentationHelper.cs
@@ -14,9 +14,11 @@
 // limitations under the License.
 // </copyright>
 
+#pragma warning disable IDE0005 // Temporarily suppressing "Using directive is unnecessary" until other projects have been updated. See #3958.
 using System;
 using System.Diagnostics;
 using System.Linq.Expressions;
+#pragma warning restore IDE0005
 
 namespace OpenTelemetry.Instrumentation
 {