Mount one under the hood and plug it in when you park (along with your trickle charger).Now that's cool, I'll give it a go for the RV. I don't know how I'd use it for the SXS though.
When we moved onto this property, the ground would shake with so many mice moving around. We got 4 cats and for a few months our property was littered with the dead. Now we just find the odd "present".
Poisons work in a controlled environment like inside a building (except they die in the walls and stink up the place). I dont like using them outside because of secondary poisoning (like hawks eating the mice)