We have had mice a couple of times and used traps at first. Then they kept getting the bait and not springing the trap even though it seemed touchy enough to us, barely touched it and it would spring. We have steel wool around sewer hose and holes into water bay. Do dishes every night - make sure trash is taken out after dinner. We put the dry dog food away every night so it's never sitting out and in our current location we have had a couple of mice again. We have put moth balls everywhere in bays, jack pads, tires, engine compartment. Hopefully we won't have any more of them. If all else fails I now have some decon under the sinks and behind the sofa. Hate those things! And for anyone who may think bad housekeeping - wrong, I keep the motorhome spotless and clean!