iO Tick Off Pour On is a tick development inhibitor. For strategic control of Cattle Tick, Boophilu microplus, (including all known acaricide resistant strains) on Beef Cattle. iO Tick Off Pour On is long term tick control purposely made and created for Australian Cattle. It also helps the burden of having tick infested pastures. Immature ticks are unable to moult to the next stage of their life cycle, and no larvae will hatch from eggs laid by treated females once iO Tick Off has been administered. Active Constituent: 25g/L Fluazuron, Solvents:100 g/L 1-dodecyl-2-pyrrolidone. 100 g/L 1-octyl-2-pyrrolidone. 415 g/L 1-methyl-2-pyrrolidone