DEEP CLEANS: Erase gunk and build-up as well as contaminants in spa plumbing MULTI USE: Specially formulated to keep your hot tub, spa, jetted tub or whirlpool fresh ECO-FRIENDLY: Gentle formula clears spa pipes without harsh chemicals for soft, silky water SAVES YOU MONEY: Cut down on chemical usage and costly repairs with properly cleansed pipes and jets PURGES 3 TIMES: Each jar allows you to completely purge your hot tub's water system up to 3X