I live in Elk Grove, CA. I am 65 years old and have run a sucsessful swimming pool tile cleaning business since 1989. Being a one man company, I had to learn ALL the aspects of operating the business from ordering supplies to shipping and handling to "doing the books" as well as servicing the client's every whim. I belong to IPSSA (Independent Pool  and Spa Service Assoc). I also literally do the cleaning of the tiles and at one point used to do the chemicals to keep the water fresh and clear. To learn more, go to www.davestile.com