Am I the only one that has had mice eat their Irish Spring and even on the box of dryer sheets, so I personally debunked that myth , lol ?? We live in the country and our motor home is in a building but still I have had them get in. I keep nothing in my camper throughout the winter , zero food and I cover my vents , caulk around the pipes as much as we can and still every once in a while we have the little critters get in. Unless it's being continuously used I believe they will still try to get in.