To clean the Jets:
You can flush the circulatory system of your tub by following these steps:
1. Fill the tub with enough hot water to cover the jets by about three inches.
2. Add one-half cup of household bleach and two teaspoons of low-foaming dishwater detergent, such as Cascade or Calgonite. Avoid foaming detergents since the tub's whirling action will fill your bathroom with bubbles.
3. Run the whirlpool for ten to fifteen minutes. When starting the whirlpool, be careful not to let any bleach splash on your clothes, towels, or in your eyes.
4. Drain the tub and refill the tub again with cold water.
5. Run the tub's jets for another ten to fifteen minutes and then drain.
For day to day cleaning, an old toothbrush or Q-tip works well for getting the outside surfaces of your jets clean.
I hope this helps to at least clean them!
Resource:<a target=_blank class=ftalternatingbarlinklarge href="http://www.associatedcontent.com/article/615801/how_to_clean_whirlpool_tub_jets_avoid.html?cat=68">http://www.associatedcontent.c...jets_avoid.html?cat=68</a>