100% OF CHICKS DIG IT
We actually bought this last year for indoor use. The cat's litter box is kept in the laundry room to keep prying doggies out of it (gross dogs!), and the babygate we had in the doorway was a pain to get around sometimes. So, we bought the PetSafe locking cat flap door and installed it. It took a bit of time for the girls to get used to it, but now they dive in and out of the cat door like it's no big thang. Installed quickly, and is durable. We took the flap off because it wasn't needed to prevent a draft or anything, and it's worked awesomely.
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