I have three cats with two at 5 yrs old and one at 12. The senior cat won't even try it. The other younger cats will play on it on a daily basis. However the little "condo" as well as the top discs are really too small for a decent sized cat to lay on or in. So I rebuilt the top discs into rectangular platforms and covered them in a piece of leftover carpet. Now the bigger cats will actually sleep on them as well. This is really great for small cats but if your handy it is worth the effort to modify.