iO Jetaway Blowfly & Lice is for the treatment of and protection against blowfly strike on sheep for up to 12 weeks under low to moderate fly pressure and treatment of biting lice by jetting in long-woolen sheep. Active Constituent: 16g/L Ivermectin Dose Rates & Administration Instructions: JETTING FOR BLOWFLY STRIKE: When applied as directed by hand jetting or by modified Harrington jetting race JET AWAY BLOWFLY AND LICE JETTING FLUID FOR SHEEP protects sheep against strike by blowflies (Lucilia cuprina, L. sericata, Chrysomya rufifacies and Calliphora nociva) (including OP resistant strains of Lucilia cuprina) for 12 weeks under low to moderate fly pressure and will control maggots in existing strikes in the treated areas.