"He who marches out of step hears another drum." ~ Ken Kesey
River rats in white ink buckets (Precision Screen Machines, Patterson NJ).
As a side note, if you get them going in around the soffit of your house do not spray them. They will head further in and work on your drywall to get away.Had to fix a hole in my ceiling where they were almost through. Put some water in a shop-vac, place the hose by where they're going in and watch em getsucked up. Leave it running all day, works like a charm. Not my idea, saw it on Youtube.