Thread-neckedIntestinal Worms Parasite Overview Found in the intestinal tract of cattle. These larvae can live in outside conditions during winter months. Merck Animal Health Solutions For Thread-necked Intestinal Worms SAFE-GUARD® EN-PRO-AL® MOLASSES BLOCK 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. Learn More SAFE-GUARD® SUSPENSION 10% Safe-Guard (fenbendazole) oral drench removes and controls Lungworms, Stomach worms (adults &… Learn More Clinical Signs DiarrheaAnorexia