Shop for Outdoors at The Home Depot. Avenger Weed Killer Organic is fast acting - visible results in less than 2 hours, highly biodegradable - dissipates quickly. It is non-toxic and can be used in areas near to people, pets and wildlife. Works in cool and cloudy conditions (as low as 40Âo F). Does not stain brick, concrete or pavement. Emulsion technology - visually reference your spray target. Sprayed areas can be planted within hours. Made from oranges, lemons and other citrus fruits - pleasant citrus aroma. Controls most weeds, grasses and broadleaves including: Spurge, Sow Thistle, Shepherd's Purse, Clover, Hairy Fleabane, Crabgrass, Smooth Crabgrass, Dandelion, White-stem Filaree, Bermuda Grass, Bindweed, Johnson Grass, Shepherds Purse and Little Mallow, Organic Materials Review Institute (OMRI) listed product o OMRI provides organic certifiers, growers, manufacturers and suppliers an independent review of products intended for use in certified organic production, handling and processing. Approved for Use in Organic Gardening by the U.S. Department of Agriculture's (USDA) National Organic Program (KNOP) Rule. Approved by the Washington Organic Food Program (WSDA), D-Limonene is Generally Recognized as Safe (GRAS) by the FDA, USDA IR-4 Project participant and patented formula, EPA registered and approved.