Chipmunks seem unphased
I had a bit of a chipmunk problem, so purchased these and put one under a fire pit, one behind a shed and one under my deck.  Super easy to use for sure and I thought they reeked.... but THEY were laughing the entire time they dug a tunnel RIGHT NEXT to one of these under the deck.  I moved the ball to cover the entrance - more hilarity as I assume they chucked it outta the way and kept on their merry way.  They did eventually tire of the game but I think it was more because of my pestering them into working a bit extra every day since they were still under the pit and behind the shed where I couldn't mess with them, but the scent persisted.  Would not buy again.
Rating: 2 stars