:B
five gallon plastic paint bucket
throw peanut butter on bottom
Place the bucket near the couch or dinette so they have something to get on to jump in.....to their death cause they can't get out!
Seriously though. Set a bunch of traps now to get the freeloaders that still might be hanging around.
Then go out at night, turn some lights on in the MH and crawl underneath your MH. Where there is a hole there will be light coming thru. You will clearly see how they are getting in. And where you need to close it off.
Usually these are from each and every opening the manufacture drilled out to run electric wires, water lines, etc. And I don't care how much the coach costs they all have these openings.