Frogs have an anti bacterial bio film on their skin

Frogs have an anti-bacterial bio-film on their skin.  In fact there is an ancient Russian practice of placing a frog in milk to keep it fresh longer.    My bioponic systems are teaming with frogs and tadpoles.  Nitrification continues but it makes me wonder if Im deriving a special advantage from the frogs that may help prevent diseases such as bacterial canker, soft rot, leaf spot, and wilt.  I rarely experience these problems, so maybe its a gift from the frogs.  At night their singing it very loud but I like the sounds of nature..

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