I have a shooting house, that's built 8 foot off the ground, and I only use t during the couple of weeks that deer season is in. The mice use it the other 50 weeks of the year. I've tried everything......an owl decoy, mothballs, dryer sheets, poison, you name it, I've tried it. Nothing really works. I have to clean it out every year, air it out good, spray the inside down with bleach, and put metal sheeting over the holes they've gnawed......all for a few days use. The local farm store sells something like that "Fresh Cab", and I'm going to give it a try. I've even thought about going to the local animal shelter and adopt me a herd of cats and lock them up in there.