I have three cats so I bought two of these cat trees-one of my cats is a senior and likes his quiet space.  He used the cubby once then lost interest.  My one cat who does use the cat tree loves the hammock.  It's where he sleeps at night.  The scratching post is also popular.  The cylinder doesn't get used at all.  There should be a maximum weight mentioned in the product description.  My one cat is rather large and is unable to enjoy the cat tree, which, by-the-way doesn't stay tight.  It loosens up and falls over.  This has scared my babies a few times.  So, overall, I would return them if I could.  It tool a long time to tell if my guys would use their cat trees or not.