24-7 Smartrace adult sheep is a sustained release bolus containing iodine, cobalt and selenium. Intended for adult sheep with a liveweight over 40 kg. They are designed for situations where iodine, cobalt and selenium supplementation is essential in the run up to tupping, at scanning or over-wintering. It can also be given to rams in advance of the mating season. It also supplies the animal’s full daily requirement of each essential trace element for 180 days.