I live in the province and just at the back of our house is a wooded area. We have a pile of old news papers we spread out under the table so they will have a place to defecate when they have to be locked in at night. We don't have a doggy door on our backdoor being careful of not to let our dogs run around at night because of the possibility of them being abducted. There are cases of dogs with certain breeds that get abducted, never to be seen by their owners again. Anyway, we just use those newspapers and change them every time our dogs poo and we get rid of the poop at the woods and the newspapers properly disposed off.