Keep your reservoir free from taste & odor & ready for your next adventure. Fast-acting tablets are easy to use & work in just 5 minutes. PRODUCT FEATURES Periodic cleaning with Camel Bak® Cleaning Tabs™ keeps reservoir & tube free from taste & odor. Camel Bak® Cleaning Tabs™ work in just 5 minutes for a thorough cleaning. See below & Video for instructions. INSTRUCTIONS To Use: 1. Scrub reservoir interior with brush, soap & water. 2. Rinse, then refill reservoir with 32 oz (1 L) of water. 3. Add 1 Cleaning Tab & shake until dissolved. 4. Let stand 5 minutes. Empty, rinse & go! Contains: Sodium Chlorite, Sodium hydrogen sulphate, Sodium dichloroisocyanurate dihydrate. Active ingredient: chlorine dioxide release agent, provided by BASF CAUTION: Irritating to eyes & respiratory system. Avoid contact with eyes & skin. Keep out of reach of children. Use only as directed. For use only with reservoir & tube. First Aid: If swallowed: Do not induce vomiting. Seek medical advice immediately & show container or label. Call Poison Control Center or doctor immediately for treatment advice. If in eyes: In case of contact with eyes, rinse immediately with plenty of water & seek medical advice. If on the skin: Wash with plenty of soap & water. Note: probable mucosal damage may contraindicate the use of gastric lavage. OUR OPINION Essential if you use hydration systems, as it keeps your bladder in top condition & hygienic.