Use HTH 5x1 Super Pool Shock n Swim to shock your pool. This pool shock destroys organic contaminants and is buffered for pH control. Warning: Keep out of reach of children. Dange: Contamination or improper use may cause fire, explosion, or the release of toxic gases. Do not allow product to contact any foreign matter, including other water treament products. if product is exposed to small amounts of water, it can react violently to produce heat and toxic gases and spatter. Do not add water to this product. Add only into water. Do not mix this product with a small amount of water. Only add directly to your pool. Highly corrosive.Read all precautionary statements on label and all first aid statements before use.