I was curious, so I looked up the label. I would recommend anyone thinking of buying it check the label first to make sure it's what you need. Someone said it's not toxic to fish, but right at the top of the label it says it IS toxic to fish and invertebrates. As a former licensed pesticide applicator, I am a firm believer in labels and MSDS reading. I would consider using this product for a change with others, but it is a bit pricey if you plan to spray your whole garden with it. The comments from the pot growers tell me they didn't read the label very carefully.