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40 oz. Weed and Grass Extended Control Concentrate

  • Kills and prevents weed and grass growth for up to 3 months
  • For use on lawns, patios, walkways and flower beds
  • Rainproof in 15 minutes
  • See More Details

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Product Overview

person pouring weed and grass concentrate into pump sprayer

The Value of Concentrates

Ideal for use with a tank sprayer to treat large areas. Must be mixed with water as directed on package.

person spraying weed and grass killer on dandelion in mulch

The Accuracy of AccuShot Sprayer

Continuous power sprayer with extendable wand for maximum accuracy

person spraying weed and grass killer weed growing in concrete driveway

The Visibility of Foaming Aerosol

See where you spray! The foaming edger is perfect for use around driveways, walkways, curbs, fence lines, foundations and more!

spraying weed and grass killer weed growing in concrete

Triple Active Formula

Spectracide Weed and Grass Killer products contain three active ingredients that enter plants through the leaves and move down to the root to kill unwanted vegetation. Find the form that fits your needs!

broadleaf weed growing in between pavers

Broadleaf Weeds

Contains Dicamba to control broadleaf weeds like dandelions and plantain.

grassy weed growing in between pavers

Grassy Weeds

Contains Fluazifop to kill grassy weeds like crabgrass and foxtail.

pump sprayer spraying weed growing in concrete crack

Fast, Visible Results

Contains Diquat to let you see the product is working fast.

close up of installed patio pavers

Treat Patios, Walkways and Driveways

Use on patios, walkways and driveways to keep unwanted weeds and grass out of cracks.

close up of dandelion with pappus in grass

Non-Selective Herbicide

Spectracide Weed and Grass Killer products are non-selective, meaning they'll kill any vegetation you spray, including grass.

yellow house with green lawn

Where to Use

Use as a spot treatment in landscaping around flowers, trees and shrubs. Use along fences and foundations to kill unwanted weeds and grass that are difficult to mow.

profile of weed and root system

For Lawn Renovation or Replacement

Use Spectracide Weed and Grass Killer to remove the old lawn and existing weeds and grasses. Plant new flowers, trees and shrubs in treated area after just one day. Wait at least 7 days before reseeding or laying sod.

orange lightening icon

Fast Acting Formula

Rainproof in 15 minutes. Visible results as fast as 3 hours. Kills the root.

green icon child and dog running

Usage

Once the treated area is dry, people and pets can return to the lawn.

Your the master of your domain and to keep your landscape in line, you have to take command with the right tools. Spectracide has easy-to-use, fast-acting lawn and garden products to give you the power to tame the toughest weed and bug invaders. Spectracide Weed and Grass Killer With Extended Control Concentrate is for outdoor residential use only to kills weeds and grasses. This product kills the root giving you visible results in 3-hours. Use along fences, paths, patios, sidewalks, curbs and driveways and around established ornamental trees, shrubs, flower beds and plantings around buildings. Use for trimming and edging landscapes. For best results, apply during warm, sunny weather (temperatures above 60F) when weeds are actively growing. Spectracide Weed and Grass Killer With Extended Control works faster at higher temperatures. Rainfall or watering 15-minutes after application will not wash away effectiveness. In order to avoid drift to desirable plants, apply when the air is calm. 1-40 ounce bottle makes up to 13 Gal.
  • Kills weed and grasses
  • Makes up to 13 Gal.
  • Visible results in 3-hours
  • Kills the root
  • Rainproof in 15 minutes

Info & Guides

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Compare Similar Weed & Grass Killer

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40 oz. Weed and Grass Extended Control Concentrate
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BrandSpectracideSpectracideSpectracideSpectracide
Name40 oz. Weed and Grass Extended Control ConcentrateWeed and Grass Killer 32 oz. Concentrate Extended ControlWeed and Grass Concentrate and Ready to Use Bundle PackWeed and Grass Killer 1.3 gal. Accushot Extended Control Sprayer
Price
Ratings
(194)
(194)
(3420)
(284)
Area of UseDriveway,PatioDriveway,PatioLawnDriveway,Patio
Concentrated or Ready to UseConcentratedConcentratedReady to useReady to use
Application TypeSpraySpraySpraySpray
Weed TypeBlack Clover,Common Chickweed,Dandelion,SandspurAnnual Bluegrass,Annual Ryegrass,Bahia Grass,Bamboo,Barnyardgrass,Beggarweed,Bermuda Grass,Bindweed,Bitter Cress,Black Medic,Broadleaf Plantain,Broadleaf Signal Grass,Buckhorn Plantain,Bulbous Buttercup,Bull Thistle,Bur Clover,Burweed,Canada Thistle,Cattails,Centipede Grass,Chamberbitter,Chicory,Cinquefoil,Clover,Cocklebur,Common Burdock,Common Chickweed,Crabgrass,Creeping Charlie,Dallisgrass,Dandelion,Day Flower,Dead Nettle,Dichondra,Dog Fennel,Dollarweed Lawn Pennywort,English Lawn Daisy,False Dandelion,Field Bindweed,Florida Betony,Florida Pusley,Foxtails,Garlic Mustard,Goatshead,Goosegrass,Hawkweed,Heal-All,Henbit,Horsetail,Horseweed,Ironweed,Kikuyu Grass,Knapweed,Knotweed,Kudzu,Lambsquarters,Lespedeza,Mallow,Marestail,Matchweed,Milkweed,Moneywort,Morning Glory,Mouse-Ear Chickweed,Mugwort,Multiflora Rose,Mustard,Narrowleaf Plantain,Nimblewill,Nutsedge,Orchardgrass,Oxalis,Pennywort,Pigweed,Plantain,Poison Hemlock,Poison Ivy,Poison Oak,Poison Sumac,Pokeweed,Prostrate Spurge,Puncture Vine,Quackgrass,Ragweed,Red Clover,Red Sorrel,Russian Thistle,Sandspur,Shepards Purse,Smartweed,Sow Thistle,Speedwell,Spotted Spurge,Spurge,Spurweed,St. Johns Wort,Stinging Nettle,Tall Fescue,Thistle,Torpedograss,Trumpet Creeper,Virginia Buttonweed,Virginia Creeper,White Dutch Clover,Wild Carrot,Wild Garlic,Wild Grape,Wild Morning Glory,Wild Onion,Wild Rose,Wild Strawberry,Wild Violet,Wood Sorrel,Yellow Nutgrass,Zoysia GrassChicory,Clover,Dandelion,Plantain,Poison Ivy,Poison Oak,RagweedAnnual Bluegrass,Annual Ryegrass,Bahia Grass,Bamboo,Barnyardgrass,Beggarweed,Bermuda Grass,Bindweed,Bitter Cress,Black Medic,Broadleaf Plantain,Broadleaf Signal Grass,Buckhorn Plantain,Bulbous Buttercup,Bull Thistle,Bur Clover,Burweed,Canada Thistle,Cattails,Centipede Grass,Chamberbitter,Chicory,Cinquefoil,Clover,Cocklebur,Common Burdock,Common Chickweed,Crabgrass,Creeping Charlie,Dallisgrass,Dandelion,Day Flower,Dead Nettle,Dichondra,Dog Fennel,Dollarweed Lawn Pennywort,English Lawn Daisy,False Dandelion,Field Bindweed,Florida Betony,Florida Pusley,Foxtails,Garlic Mustard,Goatshead,Goosegrass,Hawkweed,Heal-All,Henbit,Horsetail,Horseweed,Ironweed,Kikuyu Grass,Knapweed,Knotweed,Kudzu,Lambsquarters,Lespedeza,Mallow,Marestail,Matchweed,Milkweed,Moneywort,Morning Glory,Mouse-Ear Chickweed,Mugwort,Multiflora Rose,Mustard,Narrowleaf Plantain,Nimblewill,Nutsedge,Orchardgrass,Oxalis,Pennywort,Pigweed,Plantain,Poison Hemlock,Poison Ivy,Poison Oak,Poison Sumac,Pokeweed,Prostrate Spurge,Puncture Vine,Quackgrass,Ragweed,Red Clover,Red Sorrel,Russian Thistle,Sandspur,Shepards Purse,Smartweed,Sow Thistle,Speedwell,Spotted Spurge,Spurge,Spurweed,St. Johns Wort,Stinging Nettle,Tall Fescue,Thistle,Torpedograss,Trumpet Creeper,Virginia Buttonweed,Virginia Creeper,White Dutch Clover,Wild Carrot,Wild Garlic,Wild Grape,Wild Morning Glory,Wild Onion,Wild Rose,Wild Strawberry,Wild Violet,Wood Sorrel,Yellow Nutgrass,Zoysia Grass
Extended ControlExtended ControlExtended ControlNon-Extended ControlExtended Control
OrganicNon-OrganicNon-OrganicNon-OrganicNon-Organic
Emergent TypePre and Post EmergentPost-EmergentPost-EmergentPre and Post Emergent
View ProductView ProductView ProductView Product

Specifications

Dimensions

Container Size (oz.)
40
Coverage Area (sq. ft)
4300
Product Depth (in.)
2.71 in
Product Height (in.)
11.25 in
Product Width (in.)
5 in

Details

Application Method
Tank Sprayer
Application Type
Spray
Area of Use
Driveway,Patio
Compatible Grass Type
All Purpose
Concentrated or Ready to Use
Concentrated
Contact or systemic
Contact and Systemic
Container type
Bottle
Emergent Type
Pre and Post Emergent
Equivalent ready to use amount
12.5 gallons
Extended Control
Extended Control
Features
Kills Common Weeds
Form
Liquid
Indoor/Outdoor
Outdoor
Organic
Non-Organic
Pack Size
1
Primary Active Ingredient
Diquat Dibromide
Returnable
90-Day
Safe for Edibles
No
Spray Application Type
Concentrate
Weed Type
Black Clover,Common Chickweed,Dandelion,Sandspur

Questions & Answers

7Questions24Answers

We have a lot of the seeds that are falling from trees nearby; as well as the seedlings. Will this kill them?

Asked by Bmont June 16, 2020
2
Answers

Hi Bmont,thank you for the inquiry regarding our Spectracide Weed and Grass Killer 32 oz. Concentrate Extended Control. The product is intended for killing the grass and the weeds,however the product may work but not guaranteed. The satisfaction of our consumers is very important to us. Please contact us at 1-800-917-5438 or email us at youropinioncounts@spectrumbrands.com so that we may better assist you.

How much does it make? What is the dilution level?

Asked by Mark May 9, 2020
2
Answers

Thank you for your question. Please paste the link below in your browser which will provide the complete label with all mixing and application instructions: http://www.spectracide.com/Products/Weed-And-Grass-Killers/Weed-Grass-Killers/Spectracide-Weed-Grass-Killer-with-Extended-Control-Concentrate.aspx

What flavor is this?

Asked by Freehiker May 3, 2020
3
Answers

Hi,thank you for the inquiry regarding our Spectracide Weed and Grass Killer 32 oz. Concentrate Extended Control. The product is not to be ingested and only used per the label directions.The satisfaction of our consumers is very important to us. Please contact us at 1-800-917-5438 or email us at youropinioncounts@spectrumbrands.com so that we may better assist you.

is this safe to be used on st Augustine grass?

Asked by rey April 3, 2020
4
Answers

this kills weeds AND GRASS. SO IT WILL KILL ST AUGUSTINE GRASS

Does this product include a surfacant to help it spread over hydrophobic leaves? If not, what ki...

Asked by CF86301 June 21, 2019
5
Answers

If you find this question puzzling, see http://www.randylemmon.com/lawns/gardenline-surfactants.html . I live in an area with hard water (but not hard enough to damage appliances) and some of the weeds have a waxy coating on their leaf surfaces. The dish-detergent approach seems to help with the wetting of the leaves of the weeds with waxy surfaces. Since water softeners replace mineral ions in the water (e.g., calcium and magnesium) with sodium ions, and sodium is not great for those of us with high blood pressure, and because my water isn't hard enough to damage appliances or plumbing, I don't have a water softener. I may try distilled water, which is soft, but that adds a buck a gallon or so to the cost of the weed killer.

how much area will this cover

Asked by Bob April 26, 2018
3
Answers

That all depends on how strong you are using it. For average useage I would say one gallon covered about about 800 sq ft but mainly I just hit the weeds that were showing.

Can you spray this around trees without damaging them or spray on weeds without damaging nearby flowers?

Asked by cherbear June 10, 2016
5
Answers

I would not spray this product close to (to within a foot) flower beds and other plantings you want to keep intact. I don't know the proximity that is safe. I use it to keep weeds away in gravel driveways and parking areas and walkways. It works well.

Customer Reviews

  • 4.6
    out of 194 reviews
  • 96% recommend this product
Filter by:
Showing 1-10 of 194 reviews
Amazing product that works!
[This review was collected as part of a promotion.] I am super impressed with weed and grass killer as my lawn has never looked so good! The directions were very detailed on how to mix since this formula is concentrated. The process was super simple and within a few minutes, I was spraying my yard. I was shocked that I could visibly see the results after only a few short hours! I have a large front and back yard and pulling weeds is a very time consuming job. I am happy that I found a product that actually works and kills the weeds on contact. The best part is this product will keep the weeds away for up to 5 months! How impressive! I am very satisfied and Spectracide will now be my brand of choice for all of my lawn and garden choices!
by Crystal19
Works amazing!
[This review was collected as part of a promotion.] This Spectracide Weed and Grass Killer with Extended Control is absolutely amazing! I followed the directions and since this is a concentrate, it needed to be mixed with water. The process was super simple and within a few minutes, I was spraying my yard. Within hours, I could visibility see the difference in my lawn. I used this product in my back and front yards as well as around my pool and sidewalks where I have shrubs and I was ecstatic that it didn’t harm any of my plants! I am very impressed with this product as it not only kills the weeds but prevents them from growing back for months! Since this is concentrated, I am happy that I will get a lot of use out of this one bottle. This best part of using this product is I will no longer have to hand pick my weeds! I am very satisfied and Spectracide will now be my brand of choice for all of my lawn and garden choices!
by Crystal19
Works where I need it
[This review was collected as part of a promotion.] This weed killer works great in my yard in the places I need to get rid of weeds and unwanted grass. Compared to other brands it is affordable and high quality. No issues with the product or the package itself. Very easy to use and do myself.
by Angel Maria
Great product!
I have used this for years. I add 1 cup table salt to 2 gallons of the mix and the kill off is way quicker. It also lasts pretty much all season if you don't have tons of rain all Summer. Keeps weeds from establishing in gravel pathways, driveways and in mulch beds when selectively applied.
by Ohiogal
1 person found this helpful
Wow, this stuff is great! I have a 1.21 acre yard and 32 oz. was able to get me around the whole...
Wow, this stuff is great! I have a 1.21 acre yard and 32 oz. was able to get me around the whole yard spraying at maximum concentration. I spray my edges, under trees, along driveway seams, along street edges, under bushes, flower beds, under decks, etc. I could tell it was working the same day I sprayed. The next day I knew it was killing what I sprayed. The third day, the things sprayed are dead! I don't use it around food growing areas. Now we will and see if the extended period works like the beginning spray!
by ImRed
Work great killing weeds would use again
Work great killing weeds would use again
by HomeDepotCustomer
Seems to work fine. Waiting to see the residual...
Seems to work fine. Waiting to see the residual effects.
by HomeDepotCustomer
This been the best, I even turned my neighbor on...
This been the best, I even turned my neighbor on to this product. I put it down once a year and never any weeds. I really love this product and would highly recommend it for sure.
by Javelina
Works here in Florida - so it will work anywhere...
Works here in Florida - so it will work anywhere
by HomeDepotCustomer
by Disappointed
Showing 1-10 of 194 reviews