SpeedZone Lawn Weed Killer Concentrate does contain a surfactant and additional one is not required for use with it. The SpeedZone Red which is very similar to the Lawn Weed Killer does state on the product label that adding one may reduce the selectivity on the turfgrass so it could harm your lawn in adding one.
We recommend that you wait a minimum of 24 hours after your application of SpeedZone has dried to irrigate.
The SpeedZone Lawn Weed Killer Concentrate may be reapplied at 2-6 week intervals for more mature weeds, dense infestations, and for adverse environmental conditions. Make sure that you have measured the lawn area to be sprayed. Once you have the square footage of the treatment area you may then mix the labeled amount of SpeedZone (depends on your grass type) with water. Please note that the amount of water that is used is not important, what is most important is that you use the labeled amount of SpeedZone over the area you are treating.
How to Calibrate Sprayers
1. Mark an area of 1,000 square feet (i.e. 20 by 50 feet, or 25 by 40 feet).
2. Place the sprayer on a level surface and add water noting the final level of water in the
3. Spray the marked area with a sufficient volume of water to provide uniform coverage.
Refill the sprayer to the same level as before measuring the amount of water added. The
measured water added to the sprayer is the volume needed to cover 1,000 square feet.
4. Determine the application rate (fl oz/1000 sq ft) - 1.1 oz per 1,000 sq ft up to 1.5 oz per 1,000 sq ft (depends on grass type)
5. To each volume of water used, as measured in step 3, add the amount of SpeedZone as
determined in step 4.
If the sprayer used 2 gallons of water to cover 1,000 square feet and the desired
application rate of SpeedZone is 1.4 oz/1,000 square feet, then you would add 1.4 ounces of SpeedZone to every 2 gallons of water to be used.
SpeedZone is best applied when temperatures are between 65-85 degrees.
SpeedZone Lawn Weed Killer Concentrate 20 oz. works best when applied to actively growing weeds including Wild Violet. Be sure temps are between 60-75 degrees. The exact application time varies from Region to Region.
You do not mow within 2 days before or 2 days after an application of SpeedZone Lawn Weed Killer Concentrate.
Areas treated with SpeedZone Lawn Weed Killer Concentrate can be reseeded after two weeks.
The shelf life of SpeedZone Lawn Weed Killer Concentrate is between 3-5 years as long as it's stored in a cool, dry area away from any direct sunlight or extreme temperatures. Keep the product closed tight to prevent moisture in the product as well.
SpeedZone Lawn Weed Killer Concentrate can be used at any time weeds are actively growing.
SpeedZone Lawn Weed Killer Concentrate must be used within 24 hours once mixed with water.