Cow-Life Cattle Rub is practically labor-free. Simply hang the rub and apply your choice of insecticide mixture along the length of the rub for long-lasting fly relief. Made of polyester and acrylic the rub soaks up the solution but is virtually rot-proof. Cow-Life features a polypropylene rope with a breaking strength of 2,700 lbs. that runs the length of the rub. Rub is 10′ long by 4″ in diameter and weighs 15 lbs.