2, 4-D Solvent-Based Weed Killer Aerosol 1804

Product Description

KNOCK DOWN is an EPA-registered, solvent-base weed killer.  It is a combination of 2, 4-D and Bromacil.  This combination assures rapid top kill of all weeds and will also prevent future growth for up to one year.  Upside/down valve allows ease of use.  Can spray upside down only. It controls annual weeds and grasses including foxtail, ryegrass, wild oats, crabgrass, wheatgrass, broom sedge, ragweed, lamb’s-quarter and turkey mullein and other hard-to-kill perennial weeds and grasses, such as johnsongrass, salt grass, bouncing bet, bracken fern and horsetail.

Product Features

  • Nonselective spot weed killer
  • Rapid to kill, systematic herbicide
  • EPA registered
  • Special valve allows products to be sprayed upside down


  • Industrial Plants
  • Loading Docks
  • Parking Lots
  • Fence Rows
  • Storage Yards
  • Tank Farms
  • Railroad Sidings
  • Homes
  • Buildings

Directions for Use

It is a violation of Federal Law to use this product in a manner inconsistent with its labeling.

To control most weeds for an extended period of time on noncropland areas, including parking lots, fence rows, loading ramps, railroad sidings, storage yards, around buildings and industrial plant sites.

General Weed Control:  Remove protective cap.  Invert can and point opening in spray tip towards weeds to be sprayed.  Depress the tab on the side of tip and spray weeds thoroughly.  Be sure to completely wet weeds.  Use in late spring when most weeks have appeared.  The amount needed will depend on the area to be covered.  Reapply as necessary.  Frequency of application will depend upon soil type, rainfall and other conditions.  One can will treat approximately 90 sq. ft.  For annual and perennial weeds do not apply more than twice a year.  Do not apply more than 2.0 lbs ae per acre per application.  The minimum retreatment interval is 30 days. For woody plants do not apply more than 1 application per year.  Do not apply more than 4.0 ae per acre per year.

Entry Restrictions:  Do not enter or allow people (or pets) to enter the treated area until dusts have settled.  Do not apply this product in a way that will contact workers or other persons, either directly or through drift.  Only protected handlers may be in the area during application.

For more in-depth directions for use, please see the product label.

  • Rapid to kill, systematic herbicide
  • EPA registered
  • Special valve allows products to be sprayed upside down