Preen, 21.45 LB, Extended Control Weed Preventer, Provides Season Long Weed Control, Stops Weeds 2 Times Longer, 1 Application Blocks Weeds For Up To 6 Months, Covers 3.500 SQFT, Controls 85 More Weeds Than Regular Treflan, Apply Extended Control At The End Of The Growing Season For Weed Protection Throughout The Winter Months & Into Early Spring, Not Intended For Use On Lawns Or Vegetable Gardens, Bag.