diff --git a/dunedataprep/DataPrep/Service/test/test_DuneDeconvolutionService.cxx b/dunedataprep/DataPrep/Service/test/test_DuneDeconvolutionService.cxx
index 8a9f73d4..6fba98d6 100644
--- a/dunedataprep/DataPrep/Service/test/test_DuneDeconvolutionService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_DuneDeconvolutionService.cxx
@@ -5,8 +5,11 @@
 //
 // Test DuneDeconvolutionService.
 //
-// This test crashes in cleanup until this problem is resolved:
-// https://cdcvs.fnal.gov/redmine/issues/10618
+// This test previously crashed during cleanup (larsoft issue
+// https://cdcvs.fnal.gov/redmine/issues/10618) because the art services
+// were destroyed at program exit, after the ROOT/Cling interpreter they
+// rely on had already been torn down.  It now tears the services down
+// explicitly (ArtServiceHelper::unload_services()) before main returns.
 
 #include <string>
 #include <iostream>
@@ -120,6 +123,10 @@ int main(int argc, char* argv[]) {
     ssarg >> a_LogLevel;
   }
   int rstat = test_DuneDeconvolutionService(a_LogLevel);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash (larsoft issue 10618).
+  ArtServiceHelper::unload_services();
   cout << myname << "Exiting." << endl;
   return rstat;
 }
diff --git a/dunedataprep/DataPrep/Service/test/test_DuneRoiBuildingService.cxx b/dunedataprep/DataPrep/Service/test/test_DuneRoiBuildingService.cxx
index 6c2302df..151dd392 100644
--- a/dunedataprep/DataPrep/Service/test/test_DuneRoiBuildingService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_DuneRoiBuildingService.cxx
@@ -136,7 +136,12 @@ int main(int argc, char* argv[]) {
     istringstream ssarg(argv[1]);
     ssarg >> a_LogLevel;
   }
-  return test_DuneRoiBuildingService(a_LogLevel);
+  int rstat = test_DuneRoiBuildingService(a_LogLevel);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Service/test/test_KeepAllRoiBuildingService.cxx b/dunedataprep/DataPrep/Service/test/test_KeepAllRoiBuildingService.cxx
index 8a9911fc..c1bafc49 100644
--- a/dunedataprep/DataPrep/Service/test/test_KeepAllRoiBuildingService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_KeepAllRoiBuildingService.cxx
@@ -132,7 +132,12 @@ int main(int argc, char* argv[]) {
   }
   cout << "     LogLevel: " << a_LogLevel << endl;
   cout << "  explicitFcl: " << explicitFcl << endl;
-  return test_KeepAllRoiBuildingService(a_LogLevel, explicitFcl);
+  int rstat = test_KeepAllRoiBuildingService(a_LogLevel, explicitFcl);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Service/test/test_StandardAdcWireBuildingService.cxx b/dunedataprep/DataPrep/Service/test/test_StandardAdcWireBuildingService.cxx
index 6c812dcf..0baf85eb 100644
--- a/dunedataprep/DataPrep/Service/test/test_StandardAdcWireBuildingService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_StandardAdcWireBuildingService.cxx
@@ -194,7 +194,12 @@ int main(int argc, char* argv[]) {
     istringstream ssarg(argv[1]);
     ssarg >> a_LogLevel;
   }
-  return test_StandardAdcWireBuildingService(a_LogLevel);
+  int rstat = test_StandardAdcWireBuildingService(a_LogLevel);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Service/test/test_StandardRawDigitPrepService.cxx b/dunedataprep/DataPrep/Service/test/test_StandardRawDigitPrepService.cxx
index 25bd4a45..805ad0e6 100644
--- a/dunedataprep/DataPrep/Service/test/test_StandardRawDigitPrepService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_StandardRawDigitPrepService.cxx
@@ -395,7 +395,12 @@ int main(int argc, char* argv[]) {
     string sarg(argv[2]);
     useFclFile = sarg == "true" || sarg == "1";
   }
-  return test_StandardRawDigitPrepService(useExistingFcl, useFclFile);
+  int rstat = test_StandardRawDigitPrepService(useExistingFcl, useFclFile);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Service/test/test_ToolBasedRawDigitPrepService.cxx b/dunedataprep/DataPrep/Service/test/test_ToolBasedRawDigitPrepService.cxx
index e9f89350..9c772668 100644
--- a/dunedataprep/DataPrep/Service/test/test_ToolBasedRawDigitPrepService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_ToolBasedRawDigitPrepService.cxx
@@ -328,7 +328,12 @@ int main(int argc, char* argv[]) {
     useExistingFcl = sarg == "true" || sarg == "1";
   }
   TH1::AddDirectory(false);
-  return test_ToolBasedRawDigitPrepService(useExistingFcl);
+  int rstat = test_ToolBasedRawDigitPrepService(useExistingFcl);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Service/test/test_TpcToolBasedRawDigitPrepService.cxx b/dunedataprep/DataPrep/Service/test/test_TpcToolBasedRawDigitPrepService.cxx
index 8dc2fc6a..6b5ed4bd 100644
--- a/dunedataprep/DataPrep/Service/test/test_TpcToolBasedRawDigitPrepService.cxx
+++ b/dunedataprep/DataPrep/Service/test/test_TpcToolBasedRawDigitPrepService.cxx
@@ -329,7 +329,12 @@ int main(int argc, char* argv[]) {
     useExistingFcl = sarg == "true" || sarg == "1";
   }
   TH1::AddDirectory(false);
-  return test_TpcToolBasedRawDigitPrepService(useExistingFcl);
+  int rstat = test_TpcToolBasedRawDigitPrepService(useExistingFcl);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Tool/test/test_AcdWireReader.cxx b/dunedataprep/DataPrep/Tool/test/test_AcdWireReader.cxx
index 64a4beda..45cad27f 100644
--- a/dunedataprep/DataPrep/Tool/test/test_AcdWireReader.cxx
+++ b/dunedataprep/DataPrep/Tool/test/test_AcdWireReader.cxx
@@ -165,7 +165,12 @@ int main(int argc, char* argv[]) {
     }
     useExistingFcl = sarg == "true" || sarg == "1";
   }
-  return test_AcdWireReader(useExistingFcl);
+  int rstat = test_AcdWireReader(useExistingFcl);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************
diff --git a/dunedataprep/DataPrep/Tool/test/test_VintageDeconvoluter.cxx b/dunedataprep/DataPrep/Tool/test/test_VintageDeconvoluter.cxx
index b4402b66..a3a5e39a 100644
--- a/dunedataprep/DataPrep/Tool/test/test_VintageDeconvoluter.cxx
+++ b/dunedataprep/DataPrep/Tool/test/test_VintageDeconvoluter.cxx
@@ -114,7 +114,12 @@ int main(int argc, char* argv[]) {
     }
     useExistingFcl = sarg == "true" || sarg == "1";
   }
-  return test_VintageDeconvoluter(useExistingFcl);
+  int rstat = test_VintageDeconvoluter(useExistingFcl);
+  // Destroy the art services while ROOT/Cling is still alive; otherwise
+  // they are destroyed at program exit when the interpreter state they
+  // rely on may already be gone, causing a crash.
+  ArtServiceHelper::unload_services();
+  return rstat;
 }
 
 //**********************************************************************