Sierra Natural Science Inc. develops products that are environmentally safe for humans and pets that allow sustainable gardening and farming to replace traditional harsh chemicals. Whether it's pest control, plant diseases, or weeds. Our main gardening products are Weed Killer, Natural Pesticides, Natural Fungicide, Liquid Fertilizer, Hydroponic Nutrients, Natural Disinfectant and Hand Sanitizer. We're here to solve your problems with natural and organic products that are FIFRA Title 25(b) EPA Exempt, have a zero re-entry interval, and are approved for organic use.