Here's a tip for all you dog owners who have dogs that like to eat other dog's poop while you're out walking him around in the park:
Find some that really, really tastes bad and makes you throw up within about thirty seconds. You put that down in front of him and he'll never take another bite in his life.
One note of caution: You might want to brush your teeth as soon as you get back home and get a shot of penicillin. But it works every time.