Highly-regarded by many top-guides, the White River Fly Shop High Dry Desiccant removes moisture, fish slime and waterproofs delicate fly material to keep dries drifting high. Simply dip your water-soaked fly into the High Dry Desiccant, and the powder makes your fly moisture-resistant. High Dry Fly Desiccant will also work well on larger flies. .85 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov.