Mice do not seem to be affected by decon, they have eaten five boxes in two weeks.Am going to try traps and decon.Any suggestions would be very helpfull.Trailer is stored outside.
"Fresh Cab" works very well, I use it in RV, summer cabin, boat and antique cars. Keeps mice out. Can buy it online. Also try "Bar Bait". It works better than decon. It is sold in farm stores, etc.
I am in Minnesota too and have never had a problem. Do you remove ALL foodstuffs from RV when not in use? Any pets? I have 2 dogs and have a theory that their scents keep the little critters away. I am fortunate to have indoor storage (not air tight) but it is in a rural area and certainly not rodent proof.