Who here worms their ducks or doesn't worm them and why? When do you decide to worm your ducks? Is there a reason you do because they've come down with a parasite or just do it as precaution, and what do you use and where can you get it? And should I worm my ducks this spring? Especially with coming inside from time/time. In the Spring/Summer they will be outside pretty much full time but just wonder if I should worm them or shouldn't.