We have 5 cats. I had an older, smaller tree from the same manufacturer that lasted about 5 years of heavy use. Decided to go bigger this time and the cats LOVE it. The doors of the houses are bigger and I think that is why the cats use the houses much more than they did with my old one. also the bigger house on the lower level is great. There is usually 3/5 cats on mine at all times. Great deal considering how happy the cats are! Pros: easy to assemble, durable, keeps cats happy Cons: difficult to clean. cat hair becomes one with the fabric eventually