We have an ongoing problem with at least one dog and worms. They are not coming from fleas unless they are snacking on fleas in the yard - house and dogs are free of fleas. We do have lots of squirrels and the dogs LOVE squirrel poop (the 2 that get worms do anyway). THey also LOVE duck poop. Can the dogs get worms from snacking on duck poop? How do you tell if the ducks have worms? How do you treat them for worms? Where do I find what is needed to treat the ducks for worms?