Merck Safe-Guard Horse & Cattle Dewormer 92 gram Paste 10% For horses, Safe-Guard Paste 10% is indicated for the control of large strongyles (Strongylus edentatus, S. equine, S. vulgaris), encysted early 3rd stage (hypobiotic), 3rd stage and 4th stage cyathostome larvae, small strongyles, pinworms (oxyuris equi), ascarids (Paras
