Well this winter we used the mothball and bounce sheet theory. I also put poison in mouse size, wee things that only mice can get into and they ate that poison up like it was going out of style and then it stopped. No mice in the 5er but my wife sure doesn't like the remaining smell from the mothballs. One time we took 10 of the wee buggers for a 200 mile trip out of the Rockies to civilization and then caught them 2 at a time for 5 days with traps and peanut butter. Still can't find where they and one other have gotten into the 5er.I have fresh cab and peppermint oil to try also but the mothballs and bounce sheets and the poison seemed to have worked for now.