AgentX Dry Fly Shake is excellent for small, large and cdc flies. It is a combination of three different silicas that will clean and dry the fly as well as put a water repellent, high float coating on the fly. RIO’s AgentX dry fly shake is specially formulated to instantly dry the wettest of flies. Simply dip the fly into the powder, put your thumb on top and shake and the desiccant compound will suck out all the moisture, leaving your dry fly riding high again.