Help your pup kick his poo-eating habit with Pet MD Stool Eating Deterrent Dog Supplement. This veterinarian-formulated supplement is designed to help stop coprophagia—or stool eating—in as little as two to four weeks. Each chew is packed with herbs and probiotics to help aid in healthy digestion while also making stool smell less appealing. When used together with training, this supplement is a great tool for preventing coprophagia and the additional health risks that come from eating stool. Paw-fect for pups ages 12 weeks and older.