Product Benefits 15 individually wrapped cleaning tablets per carton.​ Natural, biodegradable, chlorine-free and environmentally safe. No scrubbing required; an easy way to clean bottles, containers and accessories. No residue, film or taste; works great on stainless steel, glass, plastic, porcelain, silicone and metal. Use anywhere! Each tablet is individually wrapped so you can clean on-the-go. Less water and effort than dish soap. Ingredients sourced from natural elements right in the USA. 1 tablet is good for 1 liter or 32 ounces of water. FAQ: What products can the Natural Cleaning Tablet clean?​ - It works on hard-to-clean products and especially those that can’t go in the dishwasher: water bottles, growlers, tumblers, coffee mugs, coffee pots, food containers, hydration reservoirs, bottle caps, lids, straws, bite valves and whatever else you can think of. How do you clean bottle cap, lids, straws and reservoir drink tubes? - Fill a bowl full of warm water, add the item you would like to clean, disassemble it if necessary, add a Natural Cleaning tablet, let it sit for 15 - 30 minutes and rinse. Will the Natural Cleaning Tablet affect the finish of my bottle?​ - It will remove stubborn coffee and tea stains and restore the original finish of your bottle. Other than that, it won’t change the finish. Do the Natural Cleaning Tablets expire?​ - Nope. They will lose effectiveness if they are not stored in a cool, dry place.​