i gave it to chickens on a piece of bread and they liked it. for ducks I have to use a syringe. I like that for most worms its only 2 doses10 days apart.
Cons: Container is generally pretty big for the average flock
Whenever I suspect worms I’ve used Valbazen, and it always clears them up! It’s administered individually, so it can take time to make sure the whole flock gets a dose. Additionally, they need to have a second round after 10 days.