People forget how smart these critters are. If they escape the trap once, you'll never catch them the same way again. I use the green pellet poison available at the local home improvement stores minus the fancy case you are suppose to put them in. Wear gloves so your scent doesn't get on the poison. If used outside their bushy tailed tree dwelling cousins' ranks will also be thinned.
I've had the squirrels get into the engine compartment and shred the wiring on one of mine. Costly!!
