Great item - hilarious to watch cats use it!
I've known several other cats enjoy this maze, so I got one for my indoor cats, partly to give them something to do, and partly to try and slow down their eating. It works on both counts, and it's fun watching the cats try to get the biscuits out as quickly as possible! Mine are smart enough to have figured out that it can be rocked over (like a vending machine) if they stand upright and push, or hook their paws through the sides. It now takes them 10 minutes to eat their biscuits, instead of 2.