Tick Development Inhibitor and Broad Spectrum Pour-On. iO Tick Off Duo contains fluazuron and ivermectin to give the dual benefits of tick control (fluazuron) and broad spectrum internal/external parasite protection (ivermectin) in one easy to use pour-on. Use in strategic cattle tick programs when broad spectrum parasite control is required in tick infested geographies. Active Constituent: 15 g/L Fluazuron, 5 g/L Ivermectin Controls & Prevents: Cattle Tick (Rhipicephalus microplus), ivermectin-sensitive gastrointestinal roundworms (including inhibited Ostertagia ostertagi), lungworms, sucking and biting lice, sarcoptic and chorioptic mites, and buffalo fly (Haematobia irritans exigua) on Beef Cattle. APPLICATOR: iO 30ml Variable Applicator with Spray On Nozzle