For what it's worth. I have my brand new Super C, used only four times last season parked on stone under a lean-to attached to my garage. I will admit that there is a Corn/Soybean field 100 feet behind it. I tried unscented Glue Pads everywhere, Peppermint oil in places you can’t imagine along with those plug-in circuit disruptors and Fresh Cab to boot. I used spray foam underneath the chassis where ever I had a suspicion of entry while the weather was still warm out. I have a thick line of mothball death around every wheel and hanging closet moth pucks in the engine compartment. Crazy? When you spend hard earned money on your RV you will do anything to stop the little bastards. Quite honestly all of that did nothing. I was still having mice get into my headliner somehow. I could hear them running back and forth. My heart would sink as I would see the mouse trails in the snow around my rear wheels. I will tell you NOTHING WORKED.
But now for the last two months I have not seen any trails or heard anything above my head in the unit. I am not saying that this is the cure all but I plugged in two CO2 detectors, put a clamp on them in the test mode and they ring 24/seven. Spring is coming and I cannot wait to open her up. By the way, my neighbors love me!