Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expired Posted by Rokket | Staff • Jul 2, 2022
expired Posted by Rokket | Staff • Jul 2, 2022

40-Oz Spectracide Weed and Grass Killer Concentrate (Extended Control

$11

$31

64% off
Amazon
55 Comments 22,786 Views
Visit Amazon
Good Deal
Save
Share
Deal Details
Amazon has 40-Ounce Spectracide Weed and Grass Killer Concentrate (Extended Control) on sale for $10.79. Shipping is free w/ Prime or on $25+ orders.

Thanks to Deal Hunter Rokket for posting this deal.
  • Note: May not be available to ship to select states.
About this Product:
  • Kills all types of weeds and grasses down to the root, and prevents weeds from coming back for up to 3 months
  • Visible results in as little as 3 hours
  • Mix and apply with a tank sprayer – spray to completely cover the leaves of the target vegetation
  • Rainfall or watering 15 minutes after application will not wash away effectiveness

Editor's Notes

Written by SaltyOne | Staff
  • About this Deal:
    • Rated 4.7 out of 5 stars from over 1,000 reviews.
    • At the time of this posting, Our research indicates that this is $12.19 lower (53% savings) than the next best available options with prices starting from $22.98. -SaltyOne
  • About this Store:

Original Post

Written by Rokket | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 40-Ounce Spectracide Weed and Grass Killer Concentrate (Extended Control) on sale for $10.79. Shipping is free w/ Prime or on $25+ orders.

Thanks to Deal Hunter Rokket for posting this deal.
  • Note: May not be available to ship to select states.
About this Product:
  • Kills all types of weeds and grasses down to the root, and prevents weeds from coming back for up to 3 months
  • Visible results in as little as 3 hours
  • Mix and apply with a tank sprayer – spray to completely cover the leaves of the target vegetation
  • Rainfall or watering 15 minutes after application will not wash away effectiveness

Editor's Notes

Written by SaltyOne | Staff
  • About this Deal:
    • Rated 4.7 out of 5 stars from over 1,000 reviews.
    • At the time of this posting, Our research indicates that this is $12.19 lower (53% savings) than the next best available options with prices starting from $22.98. -SaltyOne
  • About this Store:

Original Post

Written by Rokket | Staff

Community Voting

Deal Score
+55
Good Deal
Visit Amazon

Price Intelligence

Model: Spectracide Weed & Grass Killer With Extended Control Concentrate, Extended Weed And Grass Control, Prevents Weeds Coming Back, 40 fl Ounce

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
06/26/22Amazon$12
13

Current Prices

Sort: Lowest to Highest | Last Updated 7/7/2025, 12:20 PM
Sold By Sale Price
Amazon$49.53

Leave a Comment

Unregistered (You)

Top Comments

tunabreath
7664 Posts
41945 Reputation
You must be confused as to which product this is because if you sprayed this on your lawn you would cease to have a lawn.
maddog55
675 Posts
180 Reputation
Yep…had a senior moment!!! Saw the words "weed killer" but didn't see "grass".
I meant this:
https://www.lowes.com/pd/Spectrac...ol/4736729
It works very well to eliminate weeds which helps my grass thrive. Between that, core aerating, new seed, and an application of Milorganite, my yard looks better than it has for the last twenty years.

For total nuking (grass and weeds), I use an industrial version of the concentrated Roundup that I buy from a farmer friend who gets it in barrels and sells me a few gallons. The big box stores sell a 41% Roundup formula and what I use works even better. I tried an Amazon clone of the stuff but its track record is inconsistent.

54 Comments

Sign up for a Slickdeals account to remove this ad.

Pro
Jul 2, 2022
14,021 Posts
Joined Feb 2007
Jul 2, 2022
sarcasmogratis
Pro
Jul 2, 2022
14,021 Posts
Makes up to 13 gallons

edit: up to 13 g per bottle per sticker on bottle.

people are finding different numbers depending on usage/dilution ratios. one example in product description suggest 7oz/gallon, which gives more like 6 gallons.

product description reads "This 32 ounce bottle makes up to 10 gallons and treats up to 3,000 square feet."
... but it's a 40oz bottle so YMMV
Last edited by sarcasmogratis July 2, 2022 at 09:21 PM.
1
Jul 2, 2022
675 Posts
Joined Jun 2004
Jul 2, 2022
maddog55
Jul 2, 2022
675 Posts
Quote from Rokket :
Amazon [amazon.com] has the 40-Oz Spectracide Weed and Grass Killer Concentrate (Extended Control) for $10.79. Shipping is free with Prime or $25+ orders.

Note: this is a YMMV deal, as it may not ship to all states.

Product description:
  • Kills all types of weeds and grasses down to the root, and prevents weeds from coming back for up to 3 months.
  • Visible results in as little as 3 hours.
  • Rainfall or watering 15 minutes after application will not wash away effectiveness.
  • Mix and apply with a tank sprayer – spray to completely cover the leaves of the target vegetation.
  • Guaranteed results or your money back – see product label for details.
Rokket's Research:
  • Price drops to $10.25 if you check out with Subscribe & Save and have 5 or more S&S items for the month.
Thanks for sharing, OP.

This is great stuff. I've used all types and brands over the last four decades but nothing works as well on my lawn as this. I buy the bottle with the hose adapter and spray the entire yard is less than 30 minutes (half acre), most of the time being to move the hose from one faucet to another. I use this bottle to refill the one with the adapter.

I've paid as little as $6-7 on clearance at Lowe's in the past but it may be that the pre-pandemic $7 is today's $10!
1
2
5
Original Poster
Pro
Deal Hunter
Jul 2, 2022
40,905 Posts
Joined Jun 2011
Jul 2, 2022
Rokket
Jul 2, 2022
Original Poster
Pro
Deal Hunter
40,905 Posts
Quote from maddog55 :
Thanks for sharing, OP.

This is great stuff. I've used all types and brands over the last four decades but nothing works as well on my lawn as this. I buy the bottle with the hose adapter and spray the entire yard is less than 30 minutes (half acre), most of the time being to move the hose from one faucet to another. I use this bottle to refill the one with the adapter.

I've paid as little as $6-7 on clearance at Lowe's in the past but it may be that the pre-pandemic $7 is today's $10!
Glad you like this deal. Smilie Lowe's [lowes.com] current price is $22.98.
Last edited by Rokket July 2, 2022 at 05:15 PM.
2
Original Poster
Pro
Deal Hunter
Jul 2, 2022
40,905 Posts
Joined Jun 2011
Jul 2, 2022
Rokket
Jul 2, 2022
Original Poster
Pro
Deal Hunter
40,905 Posts
Quote from sarcasmogratis :
Makes up to 13 gallons
Thank you! Smilie
Pro
Expert
This user is an Expert in Home & Home Improvement
Jul 3, 2022
7,664 Posts
Joined Jun 2011
Jul 3, 2022
tunabreath
Jul 3, 2022
Pro
Expert
This user is an Expert in Home & Home Improvement
7,664 Posts

Our community has rated this post as helpful. If you agree, why not thank tunabreath

Quote from maddog55 :
Thanks for sharing, OP.

This is great stuff. I've used all types and brands over the last four decades but nothing works as well on my lawn as this. I buy the bottle with the hose adapter and spray the entire yard is less than 30 minutes (half acre), most of the time being to move the hose from one faucet to another. I use this bottle to refill the one with the adapter.

I've paid as little as $6-7 on clearance at Lowe's in the past but it may be that the pre-pandemic $7 is today's $10!

You must be confused as to which product this is because if you sprayed this on your lawn you would cease to have a lawn.
1
1
Jul 3, 2022
55 Posts
Joined Jul 2019
Jul 3, 2022
CleverRailway494
Jul 3, 2022
55 Posts
Weeds b gone! 10.25 with s&s. Thanks OP!
Jul 3, 2022
1,400 Posts
Joined Dec 2005
Jul 3, 2022
JohnDubya
Jul 3, 2022
1,400 Posts
This is a weird solution, but I recently had some leftover water softener salt pellets submerged in water in my old water softener. I happened to think that I bet the salt would kill vegetation, so I spread the mixture (and a number of pellets that were still solid) around some areas I don't want anything to grow, and sure enough, all the grass and weeds are dead and have stayed dead for the last 2 months. You obviously shouldn't do this if you want any vegetation to grow at all in the spots, as this much salt makes the ground unusable for growing anything, but I didn't want anything but dirt, so it was perfect and chemical-free!
1
1

Sign up for a Slickdeals account to remove this ad.

Jul 3, 2022
17 Posts
Joined Dec 2019
Jul 3, 2022
TheSilverLine
Jul 3, 2022
17 Posts
Unfortunately, can not be shipped to my area (California).
Jul 3, 2022
245 Posts
Joined May 2015
Jul 3, 2022
gastoncards
Jul 3, 2022
245 Posts
Quote from tunabreath :
You must be confused as to which product this is because if you sprayed this on your lawn you would cease to have a lawn.
Lol 😂
1
Jul 3, 2022
30 Posts
Joined Jan 2021
Jul 3, 2022
mkulink
Jul 3, 2022
30 Posts
Is there anywhere they ship it??
1
Jul 3, 2022
587 Posts
Joined Jul 2011
Jul 3, 2022
aquint5554
Jul 3, 2022
587 Posts
Is this safe to use around animals?
Jul 3, 2022
1,250 Posts
Joined May 2013
Jul 3, 2022
2Eight0
Jul 3, 2022
1,250 Posts
Just ordered 3 for myself in Virginia.
Thanks OP. A bit cheaper than the RM43 I just dropped $100 on from Tractor Supply
Jul 3, 2022
1,250 Posts
Joined May 2013
Jul 3, 2022
2Eight0
Jul 3, 2022
1,250 Posts
Quote from mkulink :
Is there anywhere they ship it??
Virginia
Pro
Jul 3, 2022
6,750 Posts
Joined Sep 2005
Jul 3, 2022
procope
Pro
Jul 3, 2022
6,750 Posts
Quote from JohnDubya :
This is a weird solution, but I recently had some leftover water softener salt pellets submerged in water in my old water softener. I happened to think that I bet the salt would kill vegetation, so I spread the mixture (and a number of pellets that were still solid) around some areas I don't want anything to grow, and sure enough, all the grass and weeds are dead and have stayed dead for the last 2 months. You obviously shouldn't do this if you want any vegetation to grow at all in the spots, as this much salt makes the ground unusable for growing anything, but I didn't want anything but dirt, so it was perfect and chemical-free!


Lol, that's what, according to legend, ancient Romans did to the Carthaginian fields.

Sign up for a Slickdeals account to remove this ad.

Jul 3, 2022
688 Posts
Joined Dec 2019
Jul 3, 2022
BrightMitten362
Jul 3, 2022
688 Posts
Quote from sarcasmogratis :
Makes up to 13 gallons
Not sure how you calculated. Product is applied at 7 fl oz/gallon to kill the weed - see illustrations/pictures of weed. Not more than 6 gallons to be effective

Leave a Comment

Unregistered (You)

Popular Deals

View All

Trending Deals

View All