Prebiotics & Probiotics is a water additive that helps grow and nourish healthy bacteria in the digestive tract to promote digestive health and immunity. It contains organic cinnamon essential oil, prebiotics, and probiotics. For all classes of poultry. Directions: Mix contents of a single packet (6 grams) into one gallon of drinking water. Stir to dissolve. For use with chicks, adult birds, and all types of poultry. Can be used with Strong Animals Electrolytes & Vitamins.