There's Jamaican, Mexican, Indonesian, and seabird guano, each with its own NPK and sustainability issues.
I used it quite a bit a few years ago, great fertilizer, solid tea. Downside is having to wear respiratory protection every time you handle it (lots of dust) The consequences aren't down the line, histoplasmosis and other fungal infections of the lung are no fun.
Last edited by Gerardo; June 26, 2018 at 02:19 PM.
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