We have the same problem with Maximus. When he gets bored, he likes to chew up his pee pads too. I'm waiting for the huge box of disposables to be used, then I'm switching to washables. (sigh) He also likes to eat the wallpaper, but that's a WHOLE other post.
Thinking about checking in to an x-pen, playpen, whatever for times he is at home by himself.