When I walk Goober in the park I have to contantly correct him when he tries to eat goose poop. I trained him with a Mr. Hanky the Christmas Poo doll.
IMO, now would be a good time for Gooby and you to attend a Puppy Class. They will teach you commands like "leave it" and many more obedience commands followed up with a very high value treat. One much too yummy than that old goose poop!