Well...my Addyson is going to be 4 yrs in March and she has no accidents if I change the pee pad after two pees on the pad. It doesn't matter were they are located on the pad....it is like she can count! Ha! Also, I can not put a throw rug down anywhere...if I do she will pee on it. The pad I can deal with, but it is very frustrating about the rugs because I love rugs. It doesn't matter what texture or material they are made of...I have tried them all.