I've been using plain old diaper-looking pee pads for Jack, but they are annoying and disposable and expensive, etc. Jack also really likes peeing on my bath mat, which I actually don't even mind that much (though I scold him when he does) because I can just wash it!! So I was thinking of getting washable, reusable pee pads for future use. Do any of you guys use washable pee pads? What kind do you recommend? Where should I get them?