My local pool store just started carrying the complete Taylor K2006 kit and replacements for all the reagents because, get this, the DOH (Washington State) is requiring commercial "pool guys" to use them! The sales lady was quick to point out that they were for "commercial use", whatever that means. On another note, this was only the second time I have visited the pool store, and when I asked if they carried liquid chlorine, she said that was also for commercial use and does not recommend it for my pool. Uh-huh.