Funny you should mention this right now! I bought a doggie litter pan yesterday...the wee-wee pad fits inside with the sides of the pan covered also. I figured Jo could lift his leg on the side and Riley could squat in the middle of the pad. Well, Riley refuses to use it...he will potty a foot or so away from it and Jo thinks anything with sides is a bed so he lays in it on the clean wee-wee pad. My2boyz...go figure
I guess I'll have to go back to the pad on the floor if they can't get the hang of it...so there's $20 down the drain!