Over the years I have had problems with mice, pack rats, chipmunks and squirrels getting into my engine compartment or running along the frame or driveshaft when I am trying to sleep. There has been some epic battles with these varmints over the years, once they get in your vehicle they are hard to get rid of. Here at the ranch I have kept them at bay for years by hanging a 5w led light at the front of the rig and leaving it on year around. No issues since I started doing that but camping is a much different story. One of the lakes I love to camp at has big fish but also big pack rats! For the past 3 years I have had no problems since I bought a flashing led light that I place under the hood at dusk. It seems to keep varmints away but is battery powered so I have to change batteries about every 3rd day. This year I am upping my game by using a 1.2w led light that I will wire directly to my truck battery through an illuminated switch. The 1.2w draw won't be enough to affect the battery over night and will be much brighter than the portable light. I'm hoping this will be a push button solution to a long standing problem for about $15-worth ten times that if it works!