I did the 5 gallon buck thing, works well but after a day or 2 the darn thing get very very very smelly.
I'm assuming you are kidding? LOL??
You gotta dump the bucket daily...
This is a clever method BTW. Chipmunks are difficult to trap otherwise.
One thing I didn't notice in this thread is, (typically) if you don't have food sources near your home, you won't have chipmunks. Bird feeders, acorns, etc..
As much as we'd love to keep bird feeders, we can't do it because of these little buggers. The big oak tree way out front is bad enough,.,