Prolate/Lintox-HD controls horn flies, lice, sarcoptic mange and ticks on beef and non-lactating dairy cattle; lice & sarcoptic mange on swine. Prolate Lintox HD contains the organophosphate insecticide Phosmet. Dosage: Cattle - 1 qt/25-60 gal water; Swine - 1 qt/25 gal water; Backrubber - 1 gal/50 gal fuel oil or other suitable carrier. Do not treat sick, convalescent or stressed animals less than 3 months old. Do not treat non-lactating dairy cattle within 28 days of freshening. Do not apply directly to suckling pigs. Slaughter withdrawal: Swine - 1 day; Cattle - 3 days.