Moccasin Joe Smoke Bright Light wind checker covers a full range of light and air movement conditions. They are Scent and Odor Free and can be used to detect the slightest of air movement. The Bright Light is perfect for those day long stalks where you don't want the smoke to give you away. Just shake the bottle to mix the powder and air, flip the spout, squeeze and watch the smoke. Great for hunting, fishing, golfing and other sports.