MN is starting to get cold, so here come the mice! I haven’t found this season’s entry point to plug up yet, so need a non-toxic deterrent. My son said his car restoration books advise putting cubes of Irish Spring out, as the scent is so strong mice won’t come around. Is this true? If not, what else? We were using live traps for several years, but many of the little buggers are now figuring out how to escape them!