Rodents (mice) keep infesting trailer and pickup truck ???

Sometimes the old ways work the best.

My grandfather used to put dishes of what he called “Critter Git’r” around the place. It was equal parts of Plaster of Paris, Cornmeal and Sugar. It was irresistible ........ and fatal.

When they eat they go looking for the one thing they can find inside, water. They don’t die inside and stink the place up.