All - Going to tell you my story, but the fellow on youtube, says it don't work. We bought "BOUNCE" dryer sheets, put them in every compartment, then I put traps out in all compartments. Caught/killed the one mouse I had. Cleaned up where they had try to build nest in services bay plumbing. Since then, with traps bated, and dryer sheets (BOUNCE) not one mouse, no distirbuance on the traps, and none of the "food in the trigger" of the traps disturbed. So even though he says dryer sheets dont work, they work for us. Went to Tractor Supply, was looking at the ultrasonic mole deterents, the fellow said who worked there, they set up a specific vibration in the ground, and the moles dont like it, and leave. I asked him how many had been returned and he said none. I also believe in the old style traps, the new style dont seem to work as well. I am talking about the plastic "trigger" verses the old copper style. This was last year (2020) in summer, and so far none. So to each his own. The dryer sheets make the motorhome smell like bounce, but no mice. In his video, he does not use bounce, he uses another brand, bounce was specifically recommended to me by someone and it's seems to work. We bought pepermint oil, but never put it out, still sitting in cabinet. I was afraid it would spill and cause a mess, worse than the mice.