Its a review about this product
The product description states that this can be used for small animals. What it doesn't say is that you cannot use this item on a cage with a bottom and plastic sides. When you attach the crock to a guinea pig cage, they can't reach it to use it. I think they should specify that it can only be used for animals that can use full cages (like rabbits) but a cage with a wire bottom cannot be used for guinea pigs because it would damage their feet. Also, when you return something to Pet Supplies 4 Less, they charge you 15% to take it back even if it is unused and still in the wrapper.
