The dirty (but profitable) job of cleaning out RV holding tanks

Cleaning out the holding tanks of RVs: it's a yucky job, but someone has to do it. It's also a booming business for Dan Hylle, who runs All Pro Water-Flow Central Florida.

FloridaToday.com features a profile and video of Hylle's business and advice for keeping your RV holding tank working properly.

There's also valuable information if you are a newbie RVer who doesn't know the difference between grey water and black water tanks.