I have used these with my foster cats. They usually need to be refilled several times daily, especially the water one. Careful not to spill when unclipping.

Pros: Clips securely into place

Cons: Doesnt hold much food or water, too shallow

These are nice to keep handy in case you have to carrier a cat for a while. They stay put and there's no worry about the cat and carrier getting all wet.

Pros: Easy to use and clean

Cons: Don't hold much

I think this product is very useful for a cat crate or carrier whenever you need to go on a trip or whatever you use your cat carrier for. Good for water or food. You could probably use it for smaller animal cages too.

Pros: it can fit in any cat carrier

Cons: it can spill easy

This is a great thing to have in a crate when traveling. It attaches to the gate of the crate so it is less likely to spill. I always freeze water in the bowl the night before so the water doesn't spill.

Pros: great frozen

Cons: none

This was a life saver when we traveled with our cat abroad. Whenever we landed in an airport, we could just fill the cup up with water without having to locate a make-shift dish.

Pros: Easy to clean, can clip at different heights

Cons: Water will splash out when moving the cage