My puppies have been known to eat anything they can get into their adorable floppy mouths! Those little lips are excellent hiding spots for all sorts of things they don't want me to find. We bought these leather muzzles that are made for Boxer faces. They don't love them but are tolerating short stints in them so far and they have been helpful. I still keep an eye on them outside but am no longer playing hide and seek in their lips. I have also been working to rid my yard of the poisonous plants that my previous Boxers showed now interest in consuming. These little guys see a buffet! It's a project but I'm making progress. Has anyone else used muzzles for this purpose? Any advice? My vet told me she has one patient who loves to eat rocks. So maybe I'm lucky, knocking on wood...