This product has helped my poor Zoe stop eating her poop, but after I am done adding (per the instructions) to her meals, she will go back to eating her poop again. I will then just add a pinch to her food as maintenance as instructed. In addition to the Forbid, I just follow her around and quickly pick up her poop not giving her the opportunity to eat it. Makes it a big inconvenient but better than her eating it. And regardless of what others may say, Zoe is not lacking anything in her diet (she has been tested by the vet). Zoe began doing this after her last and final litter of puppies, ugh!