This large caging has done a great job of containing a mother cat and her 4 elder semi-feral and rowdy kittens. Set up was a bit of a pain solo (literally, I was sore after) but doable. Just make sure everything is truly clipped in and check your levels closely before moving onto the next. The provided clips and zip ties are helpful for support but the tiny hammer was completely useless. When I do it again I’ll put a tarp underneath - there are small spaces in between the squares of the floor so spilled water or litter or food will get between and under the base. If you’re routinely entering and exiting, the clips on the door are very annoying but do the job. I’m not a small person, but I can comfortable stand and sit inside after ducking sideways through the door. This would be more difficult if you have mobility limitations. The shelving is useful and convenient to hold food and treats but not solid enough for spray bottles or other cleaning supplies to stand upright on their own. They definitely wouldn’t be sturdy enough for litter.I really like that I can take it all apart and put it away with little storage space necessary and pull it back out when needed vs. caging that is a solid piece - super convenient for an occasional kitten foster with limited space. Would recommend (bring your patience for building) and will use again. I bought some extra hammocks and needed them, the provided hammock broke about a week in after extensive playing and snoozing.If you need to use a large litter box for multiple kitties, there’s really only one spot for it which is right in the middle of the floor due to the stabilizers around the cage floor. This means you can’t easily include a tall scratching post or tower in the space. The cats also had some trouble using the ramps to get from level to level, but figured out how to work around it.