Back yard poultry are particularly at risk of parasite infection and there are only two wormers licensed to treat internal parasites in poultry. We’re not trying to eradicate parasites – this is impossible and will only serve to speed up the development of resistance – rather to manage them at an acceptable level before they cause a physical health issue.
Using A Worm Egg Count
Breaking the lifecycle mechanically
Disinfectant in and around the hen house helps to kill eggs in the environment. Also ensure the coop is well ventilated and keep the bedding as dry as possible to reduce intermediate hosts that can spread parasites.
Worm eggs and larvae dry out quickly during dry weather and they are also destroyed by UV light from sunlight so keep grass short and rotate pasture to help reduce the build-up of worms.