Hikari’s 3-step sterilization process assures unequalled product quality. Free of parasites, harmful bacteria and foul odor, Bio-Pure frozen diets are another example of Hikari’s product quality commitment. Provides maxiumum nutrition with minimum mess. Hikari Frozen Tubifex Worm Cubes are bio-encapsulated with multi-vitamins (similar to gut loading), guaranteeing that your pets get the vitamins they need. Processed through Hikari’s Mega-Power Freezer, this frozen food retains its natural color, shape, and nutritional benefits. Ingredients: Tubifex worms, water, vitamin B12, pyridoxine, l-ascorbyl-2-polyphosphate (stabilized vitamin C), beta carotene, riboflavin, thiamine mononitrate, biotin, choline chloride, folic acid, pantothenic acid, inositol, niacin.