I've been there! Yes cute lil Mandy loves dog poop! We tried the sprinkle on the food stuff and we had to put it on Laceys food too and she wasn't doing it (Lacey just likes cat poo, but that's another story) It only seemed to help for a few days and she was right back at it.
I keep the yard cleaned up as good as possible, but it gets dark so early and is dark when I go to work in the winter. Our problem was solved when Mandy had to be leashed because of her heart. She will however lead me right to a pile I missed! And I watch so she doesn't gulp it up! Good luck, it's a disgusting problem, but the dogs don't think so!