I know this is a chicken page, but I have a duck that I suspect has gapeworm. She lives with 3 other ducks and 8 chickens. No one else is showing signs of anything. I have treated her for gapeworm with safeguard dewormer for goats (treating off label). I treated her 2 days ago. I think she has improved a little (or just wishful thinking). She is eating peas and drinking water (I'm not sure if she is eating her regular feed though). I've also been giving her Vetrx twice a day. It seems to stress her out more when I separate her from everyone else so it is hard for me to monitor if she is eating her feed. My question is, how long before the worms die and she is better?