Concentrated: All Natural Garlic Scented Odor Flavor Enhancer For Freshwater And Saltwater Fish. Garlicguard Is Used Best When The Food Is Soaked So That The Fish Can Directly Obtain The Benefits Of The Product. Enhances Appetite: Research Has Shown That Many Fish Are Attracted To Natural Odors, Such As Garlic. Mix Garlicguard With Any Fish Food Item, Such As SeachemS Nutridiet Flakes To Attract Picky Or Finicky Eaters Such As Discus And Marine Angelfish. Safe: Garlicguard Is Safe For Reef And Planted Aquariums. Directions: Shake Well Prior To Use. Soak Food In Garlicguard Before Feeding. Safe For Use With Medicated Foods (To Attract The Interest Of Finicky Eaters To The Medicated Food). Quality: For Over Three Decades, Seachem Has Been At The Forefront Of Creating Innovative Products Within The Pet Care Industry. Garlicguard Does Not Expire And Does Not Need To Be Refrigerated.