Sentry Sure Shot Fish Flavored Liquid De-WormerLarge Roundworm is a common problem faced by many cat owners today. Fortunately, Sentry Sure Shot Fish Flavored Liquid De-Wormer is able to treat Roundworm and return your feline friend to top health. Sentry Sure Shot Fish Flavored Liquid De-Wormer is a liquid treatment formulated to treat Large Roundworm, Toxocara Canis and Toxacaris Leonina. Either give this de-wormer to your cat from a spoon or put it in your cat"s food and repeat the dose as needed to send your cat on the road to recovery.