hmmmm... that's a toughie! what about one of those pee posts. Apparently they have some sort of smell on them that makes dogs want to pee on it. Then if he starts to pee on the post... BIG PARTY and then maybe he'll make the connection to poop on the grass/post as well? are you able to pick him up mid poop and move him to the grass and then reward him right away?
__________________ Layla  's Simon |