When applied around the foundation of your house, borax will keep ants and spiders from entering your home. Sprinkle it on the weeds and vegetation in the driveway, walkway, and sidewalk cracks. Caution: Borax is toxic to plants, so only sprinkle it on the vegetation you want to kill. If you are looking for high quality, high purity and cost-effective Boron powder, or if you require the latest price of Boron powder, please feel free to email contact mis-asia.