Put FROG 01-18-4406 Instant FROG Mineral Sanitizer Retail Package in your skimmer basket and it delivers FROG’s fresh sanitizing minerals for 6 months. FROG’s sanitizing minerals kill bacteria and reduce chlorine use up to 50%*. That means the harsh effects of chlorine are out, and a season of pool fun is in. It’s prefilled for no mess, no guess and no stress. It’s a notable difference!