WE use an undergroud fence to keep the doods out of the garden beds. Works wonders, but you have to remember it's there or you'll "weed eat" the wire!. We have about 5 acres for the doods and I have no clue where they poop. Clearly they like to get it away from the house all on their own, but they are a year old now and this took awhile to establish. My point is, THEY established their poop spot all on their own and chose the area farthest from the house.