I like the idea of my dog being outside and inside trained on pee pads. I find it convenient when visiting if in a motel or in someones apt. I just take the pad to their washroom and put it down and he go's. He will also go on the grass as well.
I dont use the pee pads you buy though. I have what is called soakers and you can buy them in health supply stores. They are used in nursing homes on the beds for people that wet the bed. They are waterproof and I just wash them. They can be pricey but at least I dont have to go out and keep buying more.