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Baking soda (sodium bicarbonate). It's naturally occurring, and to get a level of toxicity to animals you would need to get to 450mg per liter. Unless you're operating a mine or using literally ton...
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Baking soda (sodium bicarbonate). It's naturally occurring, and to get a level of toxicity to animals you would need to get to 450mg per liter. Unless you're operating a mine or using literally ton...