Rm18 Fast-Acting Weed And Grass Killer Concentrate, 2.5 GallonsProduct Details UPC 737716754377 Manufacturer Part No 75437 Bullet1 Kills weeds and grasses down to the root Bullet2 Starts to work immediately When you want fast results with minimal prep, RM18 is your total weed control solution for unwanted brush, broadleaf plants, and grass. Ingredients A combination of two herbicides, glyphosate and diquat, RM18 starts to kill weeds on contact, producing visible wilting within 12 hours. Kudzu, wild blackberry,