Turn off the jets and unplug the tub or switch off power at the breaker
Remove any visible debris from the tub
Fill the tub with warm water until the jets are covered by at least 2 inches
Add a jetted tub cleaner or 2 cups of white vinegar and 1/2 cup of dish soap
Run the jets for 15 to 20 minutes
Drain the tub completely
Refill the tub with clean water
Run the jets again for 10 to 15 minutes
Drain the tub again
Wipe the tub surface with a soft cloth or sponge
Clean around the jet nozzles with a soft brush or toothbrush
Remove and clean the jet covers if they are detachable
Rinse all surfaces thoroughly
Dry the tub with a clean towel
Clean the tub monthly or after heavy use