This product is supposed to be good for treating fungus gnats and fungus on your indoor plants. You must be careful though because inhaling this can cause serious lung damage such as silicosis. Do your research on any products that you may use, because they can be harmful to yourself, children or pets or they may damage your plants. You might want to use neem oil if you are concerned about the risks, just remember to read up on how to use neem oil and do not use it of ferns, African Violets and a few other plants. Google is your friend for a quick check before you accidentally kill your precious.
If you already use this product, Blants are much cheaper than Bunnings. Check out their other products too. They are very good to buy magnesium from too. Enjoy your pot plants and hopefully you are successful in raising luscious healthy plants that give your home the feeling of tranquility and serenity for many years to come.