When it comes to hydrating equipment, heavy duty use needs heavy duty cleaning. HydraPak Bottle Bright tablets are readily biodegradable and all natural, made to keep all your containers clean and operating at optimum performance.Features: No scrubbing required - perfect for cleaning stainless steel bottles and mugs, hydration reservoirs, coolers, dishes at camp, hard to clean plastic containers and bottles Removes stubborn stains and odors giving your water bottle a new and fresh look Biodegradable, chlorine free, all natural and environmentally safe (no contest against other bleach based cleaners) Certified by The Natural Products Association Made in the USA Pack of 12 effervescent tablets