diff --git a/builds/rebuild/nix-sanitation b/builds/rebuild/nix-sanitation
new file mode 100755
index 0000000..1f8713e
--- /dev/null
+++ b/builds/rebuild/nix-sanitation
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+printf "clearing out nix caches\n"
+
+sudo nix-collect-garbage -d
+nix-collect-garbage -d
+sudo nix-store --optimize