Image Weed Killer Directions. For rectangular areas multiply the length by width to obtain total square feet. It will take 1 to 5 gallons of this mixture to cover 1 000 square feet.
Work your way toward the front so you do not miss any spots. Use when weeds are small and actively growing. The active ingredient atrazine begins killing weeds on contact by preventing them from being able to absorb energy from the sun essentially starving them to death.
Use when weeds are small and actively growing.
Visible results can be seen within 1 to 4. Measure the entire area to be sprayed. For rectangular areas multiply the length by width to obtain total square feet. Hook the hose up to the hose end sprayer and spray your lawn.