Imagine a slimy puddle in your back yard that sits in the shade for several days. The water goes stagnat. The material in the water promotes bacteria growth. Who knows what chemicals seep in (the stuff they spray on the trees). The water would become gross in fairly short order. Bruce R. Voorhees Senior Engineer SCH Technologies 895 Central Avenue Cincinnati, Ohio 45202 Phone: 888-SCH-OPEN Fax: 513-579-1064 [Posted in FML issue 2846]