I first tried the Havahart 2-door trap, and it was an utter failure.  (Please see my separate review of that.)
So I thought that I would give their 1-door trap a try, and glad that I did!

I caught 3 chipmunks, 3 separate times, within less than 12 hours of setting the trap each time (with peanut butter and bird seed)!  This one works well!  The chipmunks tried to squeeze out between the door and cage, but could not, like they could with the 2-door trap.  Releasing them was pretty easy.  I wore work gloves, just in case.  No problems.  They ran out quickly and as far as they could to get away from me, and into the wilderness!

This trap is much better designed.  It actually works!

I have attached 3 photos of chipmunk #2.
I first tried the Havahart 2-door trap, and it was an utter failure. (Please see my separate review of that. )
So I thought that I would give their 1-door trap a try, and glad that I did! I caught 3 chipmunks, 3 separate times, within less than 12 hours of setting the trap each time (with peanut butter and bird seed)! This one works well! The chipmunks tried to squeeze out between the door and cage, but could not, like they could with the 2-door trap. Releasing them was pretty easy. I wore work gloves, just in case. No problems. They ran out quickly and as far as they could to get away from me, and into the wilderness! This trap is much better designed. It actually works! I have attached 3 photos of chipmunk #2.