Two of these pads fit perfectly, by far the most absorbent. They are actually very big for a yorkie! My senior kitty was just have the hardest time with her litter box. I place the pad in front and it's there to catch the overflow.

These are now horribly thin and the backing is stuck together when trying to open. They leak through to the floor- the one job they have is to absorb pre and keep it off the floor!

If my puppy urinates anywhere near any of the edges, and not in the exact center of the pad, the liquid runs off and into the carpet. Pee spills over the sides. That is why i am smelling urine.