My moms old vet told her years ago, that cooked carrots seemed to help them from eating poop, I've never tried that..but, here's a website with toxic foods on it(for our pets), and if you read down to carrots, it tells you what kind to feed them..carrots won't hurt them, but, unless they're small pieces, they can't digest them..sep should have directions on the package, if it's like deter and forbid, you sprinkle it on their foods..I've tried every kind out there, and i think they all work the same, or they did for me anyway.
http://www.lacetoleather.com/fataltodogs.html