i use the reuseable Pooch pads i bought the huge one that fits in a suv in the back and it's the XXL size for 49.99 the size is 48x48 it was huge but what i did was cut it in half and sewed them closed and made two of them it works great for my 3 little ones. I use to use the other ones but they would just wet through them and tear them up. this is a great pad i would recommend it. saves u money.
http://www.petsmart.com/global/produ...=1134383823773