Please be sure to read the product label of any insecticide you choose to use to get information on the personal protective safety gear you will need. In most situations, it is recommended that you wear long pants, a long sleeved shirt, closed toe shoes with socks, chemical resistant gloves, and goggles. In areas where ventilation is poor, a manufacturer may recommend you wear a mask or a respirator. We have put together two different safety kits that will make selecting the correct safety gear easier for you.
Once crabgrass is present in your lawn, you can control it with a post-emergent herbicide crabgrass killer product, or other weed killers applied directly to the weeds once they've begun to grow.
Pre-emergent crabgrass killers, or crabgrass preventers, kill crabgrass in the ground before it has a chance to grow above ground. Timing the application of pre-emergent crabgrass products is crucial to successful crabgrass control.
In order to work properly, pre-emergent herbicides need to be in the soil before the crabgrass seeds start to germinate. Germination begins generally when the soil temperatures reach 55 degrees. This is around early spring, but the exact month will vary depending on where you live. Your local extension office can give you tips on when to apply pre-emergents in your area.
Choose a product labeled for control of crabgrass.
Many of these products must be watered in and may have other recommendations that aim to keep your desirable grass healthy and help the product work as best as possible. Read the entire label and follow directions carefully.