Safe-Guard (fenbendazole) en-pro-al molasses deworming supplement block (medicated) is designed for deworming pastured cattle by feeding these medicated blocks for three days only as the sole source of salt. For the removal and control of lungworm, stomach worms barberpole worms, brown stomach worms, small stomach worms, intestinal worms, hookworms, thread-necked intestinal worms, small intestinal worms, bankrupt worms, nodular worms.