diff --git a/invokeai/app/api/dependencies.py b/invokeai/app/api/dependencies.py
index 0bbe524506..346b274248 100644
--- a/invokeai/app/api/dependencies.py
+++ b/invokeai/app/api/dependencies.py
@@ -1,8 +1,6 @@
 # Copyright (c) 2022 Kyle Schouviller (https://github.com/kyle0654)
 
-import shutil
 from logging import Logger
-from pathlib import Path
 
 import torch
 
@@ -54,14 +52,6 @@ def check_internet() -> bool:
         return False
 
 
-def cleanup_tmpdirs(parent_folder: Path) -> None:
-    # Remove dangling tempdirs that might have been left over
-    # from an earlier unplanned shutdown.
-    for d in parent_folder.glob("tmp*"):
-        if d.is_dir():
-            shutil.rmtree(d)
-
-
 logger = InvokeAILogger.get_logger()
 
 
@@ -88,7 +78,6 @@ class ApiDependencies:
         configuration = config
         logger = logger
 
-        cleanup_tmpdirs(tensor_folder)
         board_image_records = SqliteBoardImageRecordStorage(db=db)
         board_images = BoardImagesService()
         board_records = SqliteBoardRecordStorage(db=db)
diff --git a/invokeai/app/services/object_serializer/object_serializer_disk.py b/invokeai/app/services/object_serializer/object_serializer_disk.py
index 935fec3060..16e5ffa9c9 100644
--- a/invokeai/app/services/object_serializer/object_serializer_disk.py
+++ b/invokeai/app/services/object_serializer/object_serializer_disk.py
@@ -1,3 +1,4 @@
+import shutil
 import tempfile
 import typing
 from dataclasses import dataclass
@@ -81,5 +82,16 @@ class ObjectSerializerDisk(ObjectSerializerBase[T]):
         # In case the service is not properly stopped, clean up the temporary directory when the class instance is GC'd.
         self._tempdir_cleanup()
 
+    @classmethod
+    def _cleanup_dangling_temporary_dirs(cls, directory: Path):
+        # Remove dangling tempdirs that might have been left over
+        # from an earlier unplanned shutdown.
+        for d in directory.glob("tmp*"):
+            if d.is_dir():
+                shutil.rmtree(d)
+
+    def start(self, invoker: "Invoker") -> None:
+        self._cleanup_dangling_temporary_dirs(self._base_output_dir)
+
     def stop(self, invoker: "Invoker") -> None:
         self._tempdir_cleanup()