We are totally devastated with the havoc the mice did to our camper. We have never had issues until this year. The camper is parked at home, hooked up, and we frequently go in and out. The mice app...
Once in a while we have a mouse that steals the bait or trips the trap before getting caught. My solution has been to crimp a very small piece of cloth into the little metal part on the trap where you put the peanut butter. The crimped metal holds the cloth which does a better job of holding the peanut butter...they tend to chew the cloth and whammo!
I always keep a few traps in the rig when it is stored and check regularly. I also think they use the power cord and spray mine with silicone.