Weed Beater Ultra is more than a systemic broadleaf weed killer for lawn and turf. Contains new chemistry that is especially effective on over 200 hard to kill weeds, right to the roots. Get visible results in just 24 hours. It's rain fast once dry. You can reseed in just 2 weeks! Superior cool weather performance down to 45 degrees F extends application window to early spring and to late fall, when weeds are most susceptible. Non 2, 4-D formula contains MCPA, Mecoprop-p, Dicamba and Carfentrazone.