Looking for a jetted tub and have been given conflicting information by
sales persons. The water jetted tubs I am told hold bacteria the breed in
the tubes and I have been told that the air jetted ones are better. I
have also been told that you are supposed to put some bleach and water in
the tubs every month and run them for a bit and that cleans out the tubes.

NBC did a story on this a few years ago. Their research showed 100% had some
kind of microbial growth. One recommendation is to select tubs manufactured
with rigid piping (instead of flex) and use dishwashing soap or bleach to
kill of the growth. I don't own one, but if I did, I would use bleach about
3-4 times a year just to be safe.

The story is located he
http://www.nbc4.com/productsandservi...93/detail.html