Bonide BurnOut Organic Weed Grass Killer Weed grass killer approved for organic gardening. contains all natural ingredients. Ideal for non-selective control of herbacious broadleaf and grassy weeds. Fast acting and rainproof when dry. Works in temperatures as low as 40 degrees Fahrenheit. Kills most roots. Safe for use around children and pets when used as directed. Active ingredient Citric Acid. Size 1 Qt.. Concentrate or Ready To Use Concentrate. Product Form Liquid. Application Type Pourable. Safe For Edibles No. Safe For Pets Yes. Coverage