... , it can kill wild hybrid fish, loach, snail, mussel, frog eggs, tadpoles and part of the aquatic insects. Tea saponin is ... the mud, and can also kill a variety of frog eggs, tadpoles, leeches, and snails, mussels, clams, and has a protective ... gills of the pathogen, but also can kill the parasites (eggs). Best stick with the 2 to 3 times a month ...