You sure on the oxalic acid aspect? I could see it maybe for bugs, but I figured the crystals would be too tiny. Oxalic acid causes kidney problems in larger or

You sure on the oxalic acid aspect? I could see it maybe for bugs, but I figured the crystals would be too tiny. Oxalic acid causes kidney problems in larger organisms because it is hard to process. I suppose its crystal formation and poor solubility are linked here.