This Water Care is manufactured by King Technology. For more than 25 years, FROG has sanitized pool and hot tubs in its unique, patented way. FROG features prefilled cartridges for no mess, no guess, and no stress pool and hot tub care. Each FROG product uses Fresh Mineral Water∞ to make your water Cleaner, Clearer, Softer and Easier®. No matter what size pool or hot tub you have, we make a product for it!