Disinfect a whirlpool bathtub by filling the tub with hot water, adding 1 tablespoon of dishwasher detergent and 1/2 cup of chlorine bleach. Turn off the air supply, and operate the jets for 15 minutes. Drain the tub, fill it with cold water and operate the jets another 15 minutes to rinse the bleach and detergent from the jets. Clean the tub a minimum of once every 30 days and more often if you use the jets regularly.
Soaps and detergents often leave sticky residue in the jets of the whirlpool tub. These residues form a breeding ground for bacteria. The dishwasher detergent helps to break down the residues while the bleach kills any bacteria growing in the tub. The hot water also helps to dissolve and remove these residues.
Some jetted bathtubs have removable covers on the jets. For additional cleaning and disinfection of the tub, remove these covers, and clean them with a toothbrush you reserve for cleaning.
In medical facilities, whirlpool tubs require cleaning and disinfection at the beginning of each day and between each use. Medical facilities use special cleaners that kill bacteria and remove any organic material that allows germs to colonize. Disinfection requires using the cleaning agent in the right proportion and maintaining the minimum contact time.