Farnam SandClear Natural Psyllium Crumbles- 10lbFarnam SandClear Natural Psyllium Crumbles 10lb Sand impactions can occur when a horse ingests sand or soil particles, either accidentally or intentionally. Many horses ingest small amounts of sand without harm, but if the volume is high enough, the excess sand may congregate in the horses intestinal tract and can cause an obstruction. The incidence of excess sand in the gut is often thought of being limited to horses in sandy areas or regions, but