Well after trapping over 20 mice (2 litters I figure...gross is an understatement) over the last week in our trailer we finally found the point of entry. Behind a drawer there was a HUGE , well 3" diameter hole in the floor with electrical and water going out, running under the floor and up the other side. Obviously the factory screwed up here. Plugged this with brass wool and expanding foam (lots)from top and bottom. Set a couple more traps for any stragglers. While under the trailer I foamed all holes but the others were already plugged, one even had steel wool. Now I know why our trailer got so cold so quick even using the heater. We were heating the outside! Also put some moth balls in containers under the trailer. So as another poster said (thanks btw) theres no substitute to crawling under , pulling out all drawers and following plumbing and electrical. Thank God we got them before they chewed up wiring or holes in cabinets.
97 Okanagan 22ft 5er
02 Silverado D/A 4x4..sweet.