Summit 131 Clear-Water Barley Straw for Livestock Watering Troughs, Treats up to 1000-Gallons

Keeps the water in watering troughs clean and clear for longer. Safe and natural. Won't harm animals or livestock. Treats up to 1000 gallons for as long as 6 months. Plastic casing keeps barley straw contained. Durable casing lasts longer than messy loose bales.