I know this is an old thread, but the issues are the same. I've been dealing with intermittent mouse intrusions and may now have a chipmunk coming in. I have tried electronic sound emitters , scent away, and snap traps. Convinced snap traps work the best for mice. Anyway, I'd much rather keep them out then deal with them inside. Today I found a HUGE hole where Sportsmobile cut through the inner fender wall to run the water line. I think this access point allows the "critters" in and then all they have to do is jump out where Sportsmobile left a large gap in the van's side for the heater. Any chance somebody has tackled this intrusion point? I would love to just shove some copper/brass scrub pads in there, but something the size of a chipmunk would probably just yank it out.