One of the two upper suction cups did not work, so I requested a replacement part. Wayfair sent me another perch, and from there I was able to get another suction cup that worked. Once the item was able to be installed, I loved it (and, more importantly, so did my cats), so I decided to order another one thinking that the first defective suction cup was a fluke. I was wrong. So out of 3 complete set-ups I received, only 36 of the upper suction cups actually worked. So Ill be returning the other one and looking for another brand. Its a shame cause once its installed, its great