Sweetlix(R) ROL.494 pressed blocks provide effective fly control in your beef cattle and horses, as well as ensuring a complete vitamin and mineral supplementation in their diet. Formulated with Rabon(R), a cholinesterase inhibitor that prevents the development of horn flies, face flies, house flies, and stable flies in livestock manure, this weather-resistant block may be placed directly in your pasture, eliminating the need for expensive bunkers and feeders (one block per five head). Guaranteed for predictable consumption, Sweetlix(R) ROL.494 will save you money and improve the health of your cattle and horses. | Sweetlix ROL.494 Pressed Block | Size 40 lbs