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XP 820 is a unique, slow-release ear tag for cattle that is the first ever tag to contain abamectin, a highly active macrocyclic lactone that has never been used before on cattle in the USA plus the synergist piperonyl butoxide. XP 820 is particularly effective against horn flies, including strains resistant to synthetic pyrethroid and organophosphate insecticides. Controls Horn Flies for up to three months with one tag per head and up to five months with two tags per head. Reduces Face Flies with two tags/head.
