Basically, this is not a bad product, but many cats, including my own, love to play with their food, which makes the not necessarily very useful once the fact of suspending the bowls. Especially if the cat pulls too the bowl toward him, she finds herself on the diagonal, and if you had put water, hello the ground ...
For washing is not very funny either because it leads too heat, so quickly we did get burnt ^^
Finally, I would say that its utility can be with multiple cats (to share) or to make just small portions.