When the chipmunks were stealing my tomatoes, I used the rat sized Victor traps, Chipmunks don't smell their kind's remains, they smell the peanut butter! (2 traps, 8 dead munks in 2 days) This works until the ants find the trap, they can strip all the peanut butter in about 20 minutes, and not set the trap off!
Small Victor traps for mice in the garage, We set 3 traps set over 10' apart, in the late fall average 2 a day. Again Peanut butter.
I once told a tenant to use a "pea sized" glob of peanut butter on the trigger and set in a corner of her kitchen, I would be in Monday to empty the trap. When I got there, there were mouse turds everywhere in the kitchen, but the trap wasn't set off! She hadn't exactly followed my directions. Instead of peanut butter, she used grape jelly! Instead of a pea sized glob, she dumped about 2 cups! I think she was hoping they died of Diabetic Coma!
Ivan