Quick and Easy Hot Tub Sanitizer with minerals and up to 75% Less Chlorine! FROG @ease combines sanitizing minerals with SmartChlor® Technology to kill bacteria 2 ways. The result is Fresh Mineral Water®∞ that’s silky soft with far less odors and the easiest water to maintain because it’s self-regulating. It knows when more sanitizing power is needed and automatically delivers it. When you need to do something, it flips over. Includes: 2 FROG pre-filled cartridges FROG @ease test strips FROG Jump Start Shock