Sometimes due to circumstances beyond one's control, ponds can become cloudy or muddy. The number one way to combat this type of unsightly looking water is with pond dye. These dyes are specially formulated for use in ponds. Along with aesthetics pond dyes also help treat unwanted weed growth by filtering UV light from the sun. These pond dyes are 100% safe and will not harm any wildlife. These are food-grade products, which are safe for consumption. This also means it is safe for swimming, fishing, irrigation or watering livestock.