Bottle Bright effervescent tablets provide the best solution for cleaning your hydration vessels and containers. Whether it's a water bottle, soft flask, reservoir, travel mug, baby bottle or thermos, we offer the safest and most effective method to care for your hard to clean drinking containers. Our biodegradable and non-toxic formula bubbles away grime and breaks down to inert natural substances and is certified by the Natural Products Association. With every purchase you make, Hydrapak gives an equal amount of Bottle Bright to people in developing nations who are in vital need of clean water containers. Buy Clean. Give Clean.