[yorkieangel]

I use big plastic foam rubber pieces under my pen. they wipe clean with soap and water. if the smell starts geting stinky from foam absorbing , then I can take outside and hose down. If it's cold out I do it in the shower.

You can get grey ones at places like Home Depot and pretty colored ones in Places like Walmart in the toy section . Usually near the big toy section with little play kitchens and stuff. It was $18 for me to get 4 BIG interlocking squares in red and blue. I usually only use one or two together for the pen