If you shop for a new tree, take your time and get one that your cats can climb easily and sleep on.
The best of our 3 trees has a spiral curved ledges that are easy for an older cat to manage as steps.
We had two very old cats who could manage this type:
New Cat Condos 33" Cat Perch & Reviews | Wayfair
Our tree is similar with 2 higher curved platforms.
The tree should also be firm and not rickety...they may not use it if it moves too much.
I bought one just like ours for our son when he moved to his new home a few years ago. He put it in a dark corner, and the cats never used it. I was visiting one day and noticed and suggested he put it in a window and now his cats are in it all the time.
This is a photo of our tree.... showing the top 3 ledges. Our cats spend alot of time in this tree...it makes them feel safe too.
__________________
All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
************************************
.
Weezie looking at petunias 8.25.2017
****************************
These forums are for mutual support and information sharing only. The forums are not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider. Always consult your doctor before trying anything you read here.