Essential K® with Fly Control is a low sugar/starch (NSC), no added iron ration balancer designed to be fed to easy-keeping or overweight horses, or used as a top-dress with any other Tribute® feed to provide additional vitamins, trace minerals and amino acids to support performance or enhance topline. This ration balancer is formulated with ClariFly®, which helps prevent the emergence of horn flies, house flies, face flies and stable flies from the manure of treated horses. Essential K® with Fly Control is ideal for horses consuming hay or pasture that is 50% or less alfalfa (or other legumes). If feeding hay or pasture that is 50% or more alfalfa, check out Alfa Essentials®. This ration balancer is formulated with pre- and probiotics to support your horse’s digestive health.