As part of our aim to ensure that fish go back in at least as good a condition as when they were hooked, if not better, we came up with the Ulcer Swab liquid. A lot of the focus is on products for treating hook damage to the mouth, but this product is also perfect for use on abrasions, ulcers and other wounds anywhere on the body of the fish. Ulcer Swab is designed to clean and disinfect these areas, so as to prevent them from becoming infected by bacteria or fungus. Propolis can then be applied to seal the wound. It comes in a bottle with an eye-dropper style nozzle for easy application, and you get 30ml in each bottle.