Spot on insecticide 1% is used for the treatment and control of lice and flies on cattle and is also used for the treatment of ticks, lice keds and blowfly in sheep. The active ingredient in Spot on insecticide 1% is deltamethrin, which is one of the most reliable and safest to use insecticides in the world. Active Ingredient: Deltamethrin Target Species: Sheep and cattle Treats and Controls: Lice, Flies on cattle. Ticks, keds and blowfly in sheep Administration Method: Pour on Withdrawal Time: 17 days for cattle intended for meat or offal, zero hours for cattle producing milk for human consumption, 35 days for sheep intended for meat or offal, not permitted for use on sheep producing milk for human consumption. Dosage for cattle: 10 ml per animal. Features on Spot On Treat and control lice and flies on cattle Treats ticks, lice, keds and blowfly in sheep. The active ingredient is deltamethrin Reliable and safe.