What's the fastest way to kill leeches?

Leeches, also known as leeches, are very harmful to fish, and fish bitten by leeches are prone to illness and even death. Control method of leech: \x0d\ 1. Chemical control: Leeches like to live in ponds with acidic soil. They can be thoroughly washed with quicklime, and the PH value of pond water is controlled between 7.4 and 8 to prevent leeches from growing and reproducing. \x0d\2, trapping method. Soak dried loofah in fresh pig blood to make pig blood coagulate in the pores of loofah. At night, put the towel gourd soaked in pig blood in the water around the pond and tie it to the shore with a rope. Collect the lured leeches for later use. It can also be bundled into bundles or balls with straw or messy fibers, soaked in animal blood to dry, and then trapped in water. \x0d\3。 Drug control: 90% crystal trichlorfon solution is sprinkled all over the pond. \x0d\ Processing and efficacy of leeches \x0d\ Wash the captured leeches, blanch them with boiling water or suffocate them with lime, and dry them in the sun. Dried leech is a traditional Chinese medicine. Their nature: salty and bitter, entering the liver meridian. Their efficacy: detoxification and anti-cancer, breaking blood and removing blood stasis, reducing swelling and removing phlegm. The price is good, don't throw it away.