I was walking around Lowes the other day and the two sweetest looking elderly couples were standing next to me talking. And then once I heard the conversation, well they were talking about the best way to kill the largest number of chipmunks. Wow, ok so at my new place we are OVERRAN with chipmunks. What kind of damage can they do? Other than the many tunnels I see, I told my dh its even more important to use the small gauge on the coop otherwise I'll be housing chipmunks!