AVOMEC DUEL Broad Spectrum Drench for Sheep is a dual combination antiparasitic drench containing 1 g/L abamectin AND 50 g/L closantel for treatment and control of roundworms, liver fluke, nasal bot and itch mite in sheep. It has activity against resistant strains of Barber’s Pole Worm and 6-week sustained activity against closantel-susceptible Barber’s Pole Worm.