Price/Ea.

$46.74

Buy 2 or more: $44.73 each

Size / Description

quart (32 oz)

$46.74

pint (16 oz)

$36.32

gallon (128 oz)

$129.38

Total Price: $46.74

Free Shipping

In Stock. Normally ships in 1 business day.

For large order quotes, please call us at 866-581-7378.

Not for Sale to: AK, AZ, CA, HI
NY, VT (Restricted To Licensed Applicators Only)
NY residents, see our New York Pest Control page.

Have a Question? Ask Our Pros!

Call Us: 866-581-7378

Mon-Fri 9am-5pm ET

Email Our Pros

You May Also Need

Product Overview

Compare to Select 2EC and Arrow 2EC Herbicide. With Grass Out Max you get the same active ingredient for less expense. It is highly recommended that you use a surfactant with this product.

Grass Out Max is a selective post-emergent herbicide used to control annual and perennial grasses. It is labeled for most landscape, home and garden, ornamental, agricultural and non-crop uses. The unique feature of Grass Out Max is that it will ONLY kill grasses and NOT effect flowers, shrubs, broadleaf crops or other broadleaf plants. Grass Out Max contains 26.4% Celthodim Herbicide and effectively kills more than 50 different grasses.

Grass Out Max is only labeled for use on clover when used in the states of Idaho, Oregon, and Washington.

Details

Active Ingredient	Clethodim 26.4%
Target pests	Barnyard grass, Cheat grass, Canary grass, Crabgrass (hairy, large, smooth, southern), Foxtail, Goose grass, Rye grass, Annual Blue grass (Poa annua), and many others Will Not kill Flowers, Shrubs, Broad-leaf Crops or other Broad-leaf Plants See label for complete list
For use in	Landscape, Home and Garden, Ornamental, Agricultural and non-crop areas * See label for complete list
Application	16 oz. per acre Add a crop oil containing 15% emulsifier at 1 qt. per acre * Use a Surfactant to Increase Effectiveness * See label for complete application instructions
Pet safe	Yes, if used as directed on Label
Formulation	Professional Product
NOT FOR SALE TO	AK, AZ, CA, HI NY, VT (Restricted To Licensed Applicators Only)
Shipping Weight	2.30 lbs
Manufacturer	Agrisel
UPC	858916001204
EPA Registration	72159-15

Ground Application

Use a minimum of 5 gallons and maximum of 40 gallons of spray solution per acre. Use of sufficient spray volumes and pressure is essential to ensure complete coverage.

Under the following conditions a minimum of 10 gallons per acre is required: narrow row soybeans, broadleaf herbicide tank mixes, perennial grasses, volunteer corn, drought or stress conditions heavy grass pressure or when grasses are at or near maximum height. Failure to use a minimum of 10 gallons per acre under these conditions can result in poor coverage and reduced grass control requiring repeat applications. Spray pressures should reflect a minimum of 30 psi and a maximum of 60 psi at the nozzle. Do not use flood nozzles.

Applications to onions (dry bulbs and green), garlic, and shallots (dry blubs and green) should be made in a minimum of 20 gallons of spray solution per acre.

Product Documents
- Grass Out Max (Clethodim Herbicide) Label
- Grass Out Max (Clethodim Herbicide) SDS
107 Customer Reviews

Top Reviews

Grass Out Max

By Betty on 06/01/2017

I barely applied the product and cannot say yet how effective it is. The product information booklet is extensive, but never states how many ounces to a gallon sprayer for use in home perennial beds. …
Read Full Review »
I barely applied the product and cannot say yet how effective it is. The product information booklet is extensive, but never states how many ounces to a gallon sprayer for use in home perennial beds. It says 8 oz. for an acre. I am guessing 1/2 oz./gallon for home use, but guessing is uncomfortable.

Expert response:

Thank you for your review. I apologize that the label is extensive and confusing. We recommend using a surfactant like Non-Ionic Surfactant to help increase the efficacy of this product. If you use the surfactant, the recommended mixing rate for one gallon would be 2 tsp of surfactant with approximately .4 oz of the Grass out per gallon of water per 1,000 sq feet. Please let us know if you have any other questions.

Good grass killer

By Joseph on 08/04/2014

Verified Purchase

I purchased this product to use on my food plots. It arrived timely, and I mixed the product with 2.5 oz per gallon of water. I mixed in some sticker as indicated, and used a backpack sprayer to apply…
Read Full Review »
I purchased this product to use on my food plots. It arrived timely, and I mixed the product with 2.5 oz per gallon of water. I mixed in some sticker as indicated, and used a backpack sprayer to apply. I didn't see any immediate action (first couple of days) but finally noticed that it was working. It took out the crab grass in my clover field without harm to the clover. My plots are about 1/3 acre; I would suggest that you map out a route to insure complete coverage if you use hand sprayer like I did, as I missed a few spots do to walking deviations. I recommend this product for use in food plots.

Takes Patience, But Very Effective

By Happy on 09/29/2012

Verified Purchase

We have about 12000 square feet of lawn with curbing and beds throughout. Kentucky bluegrass creeping into the groundcover of the beds used to be a real problem. Then my neighbor introduced me to to G…
Read Full Review »
We have about 12000 square feet of lawn with curbing and beds throughout. Kentucky bluegrass creeping into the groundcover of the beds used to be a real problem. Then my neighbor introduced me to to Grass Out Max. He had used it the previous fall and his beds look great. He said it took about a month for it to work. I tried it and it and for the first couple of weeks didn't see much difference, but after a month it did the trick. Now just an occasional touch up application keeps the beds looking good.

See all 107 customer reviews »
184 Questions & Answers

Helpful Q&A's

Q

I purchased 'Grass Out' from you and it recommends adding a non-ionic surfactant,
I need to know how much to use of the Grass Out and the Surfactant. Do you mix it together and what is the percentage of each. Thank You.

A

If you are using Non Ionic Surfactant you would mix 2 tsp per surfactant with approx. .4 oz Grass out in one gallon water over 1000 sq feet. Please let us know if you have any more questions.

Q

How long should I avoid watering or rain?

A

Grass Out Max (Clethodim Herbicide) should be rainfast within 4-6 hours after application.

Q

Can Grass Out Max (Clethodim Herbicide) be used as a spot treatment in flower beds?
I have completely read the product label and the answer to "per gal.concentrations" questions which will not do! I have a garden with irregular shaped flower beds where it is impossible to estimate 1000 square feet for the amount of 0.2-0.4 oz. Grass Out Max. Like most people in my situation I will be SPOT SPRAYING throughout these beds. How much per gallon is necessary for an effective concentration to kill on contact regardless of the area covered?!!!

A

There is an applicaiton ratio for spot treaments on the product label for Grass Out Max (Clethodim Herbicide) as well. You would mix .33 oz - .65 oz. per gallon of water.

See all 184 customer questions »