Out here in AZ (Phoenix area regional parks) we see a lot of lights overnight under vehicles to keep out unwanted pests; rats in the winter and snakes in the summer? Of course, we see it practiced elsewhere as well.

We do not subscribe to this tactic and have never had a problem in a lot of years of camping. We don't stay for more than a few days at a time while camping in this area so maybe an extended stay would warrant a closer look into this practice.

So, would love to hear from others - for and against this strategy. Cheers!