For the treatment & control of gastro-intestinal roundworms, lungworm, external parasite in cattle & sheep. Also indicated for the control of sheep scab, Used 3 weeks, 8 weeks & 13 weeks on a set stocked system, Ivomec classic inj. will give season long control of parasitic scour & hoose in cattle., Easy to use low volume 1 ml subcutaneous injection per 50kg bodyweight