Copper Sulfate Mini Crystals - EPA Labeled - 50Lb Bag

If you flush one cup of this down your toilet once a month, it will kill all the roots in your plumbing, sewer lines. If you have a swimming pool, you can put a half a cup in your strainer. This will help the algae not to grow. You can treat half your lake wait two weeks and treat the other half and it will kill the algae in your lake. Farmers can feed it to cattle to help control the bacteria in the cattle. This is all around a handy item to have. Thank you.