8 Tablets/pk. All that is necessary is to simply rinse, reuse, and occasionally boil your filters to remove build up, but for a deeper clean, use these eco-friendly cleaning tablets. Formulated from all-natural, organic, biodegradable and phosphate-free ingredients that eliminates oil buildup in CoffeeSock filters. Once every 6-8 weeks, boil filter(s) with 1 tablet in fresh water for 10 minutes to remove built-up coffee oils. Repeat a fresh water boil for 5 minutes. Rinse with clean water and hang to dry. These tablets can alternatively clean your coffee machine gear! Ingredients: Sodium Bicarbonate: Commonly known as baking soda, helps dough rise in bread and cookiesSodium Carbonate: A naturally occurring salt used in toothpasteSodium Gluconate: Derived from glucose, this ingredient helps break down and rinse away soilsSodium Citrate: Derived from corn sugar, this salt regulates acidity in the cleaning productSodium Percarbonate: This is a key ingredient used in toothpaste for its oxygen based bleaching abilitiesSodium Coco-Sulfate: A foaming agent produced from coconut oilsCitric Acid: Derived from citrus, a great aid to tablet solubilityCorn Starch: Used as a natural binding agentAlkyl Polyglycosides: A great natural surfactant derived from plant oils(not a food product)