If this is a problem in your area (generally humid summer climate areas and mosquito areas) consider keeping the flock on Better Daze(tm) to boost their nutrient intake. Layers can be on LayNLayer(tm) herb mix.
Many people like to start their chicks, poults, ducklings, keets, etc on GI Soother mixed with a wet mash. It really helps give thier system endurance as well as help the body with coccidial and bacterial challenges.
Happy & Healthy Poultry make Happy Owners :)
All of these products and many more are available right here on our site under the products tab. Look under herb mixes and also extracts. BE VERY BLESSED!