I use this everywhere around my house, and it kills everything that crawls in Arizona.
http://www.domyownpestcontrol.com/de...jar-p-532.html
It's a powder that you mix in a pump sprayer. It dries as a powder also. Safe around animals once it drys.
When I tore down the Blazer, I used it. I sprayed every nook and crany of that thing. Found lots of dead bugs, but not one alive. Even scorpions!