Hazel Nut doesn't go off the edge of the pads, but every once in a while she does get really close. Luckily it is a little bit of urine and the pad mostly absorbs it.
As for her poo, she only gets that on the pad about 50% of the time. It is always close when she misses, but I don't get that problem at all.
I think the idea behind the water bottles is to build a small barrier around the pad, about 2-3 inches high so they go in and out of the area to do their business. I am going to try squaring the pads off with something, but probably not water bottles. I am thinking of building something simple, just a frame to outline the area.
