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Hi-Yield (33692) Super Concentrate Killzall Weed & Grass Killer (32 oz)

4.4 4.4 out of 5 stars 2,820 ratings

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Purchase options and add-ons

Brand Hi-Yield
Item Weight 2.6 Pounds
Item Form Liquid
Active Ingredients surfactant
Coverage 6400 square_feet

About this item

  • Weed killer controls grasses, broadleaf weeds and woody brush species. Do not use on lawns.
  • Contains a double-surfactant formulation that dries on plant fast to start working quickly.
  • Allows you to cover and treat large areas. 32 oz. covers up to 6,400 sq ft.
  • 32 oz bottle of weed control liquid concentrate can treat up to 6,400 square feet.
  • See label for application instruction. Spraying accessory required for application.

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$20.76 ($0.65/Ounce)
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$13.18 ($0.82/Fl Oz)
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.5 x 3.5 x 8.5 inches; 2.6 Pounds
  • Item model number ‏ : ‎ 33692
  • Date First Available ‏ : ‎ August 29, 2007
  • Manufacturer ‏ : ‎ Arett Sales - LG
  • ASIN ‏ : ‎ B000IJRKWO
  • Customer Reviews:
    4.4 4.4 out of 5 stars 2,820 ratings

From the brand


Product Description

Hi-yield weed grass killer weed killer concentrate

Super Concentrate Killzall Weed & Grass Killer

Short, concise consumer-friendly label. Non-selective weed and grass killer, contains a double-surfactant formulation that dries on plant fast to start working quickly. Multiple use formulation...near fences, in paths, patios, sidewalks, curbs and driveways. DO NOT USE IN LAWNS. Use around ornamental trees, shrubs, flower beds and buildings. Labeled for lawn renovation, brush and vine control and stump treatment.

USE INSTRUCTIONS

For best results use 2 1/2 fl. oz. (5 Tbs.) per 1 gallon of water. One gallon of water will treat approximately 300 sq. ft. Direct spray on undesirable weeds and grasses in and around flower beds, ornamental trees, fruit and nut trees, grapevines, shrubs, fences, driveways and walkways. Spray when air is calm. For use in preparing areas for planting of ornamentals, trees, shrubs, desert landscapes, rock gardens, flower beds or similar plantings. Treated areas can be planted 1 day after treatment. To control brush or vines apply to green and actively growing brush or vines. For plants taller than 5 feet, cut them back and spray the regrowth.

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
2,820 global ratings

Customers say

Customers like the value and speed of the weed moss control agent. For example, they mention it's well worth it, and a cost-effective option for larger areas or multiple applications. That said, opinions are mixed on performance and quality.

AI-generated from the text of customer reviews

39 customers mention33 positive6 negative

Customers like the value of the weed moss control agent. They say it's well worth the price and a cost-effective option for larger areas or multiple applications. Customers also have no problems or complaints with the transaction.

"Easy to use and very good cost to use ratio." Read more

"Good value. Effective" Read more

"...Excellent value compared to ‘name brands’." Read more

"...This makes it a cost-effective option for larger areas or multiple applications...." Read more

18 customers mention18 positive0 negative

Customers find the weed moss control agent easy to mix and use. They appreciate the good mixing instructions. Some customers like that the product is perfect for simple use and can be pre-mixed for their needs.

"Easy to use and very good cost to use ratio." Read more

"I use this stuff in a sprayer for all my weeds on my property. It’s so easy to mix and it lasts a while!!..." Read more

"Pros:Very clear directionsSeems to somewhat do the jobCons:Did not actually do what it was meant to do...." Read more

"...Not literally. Wake up!I think this is perfect for simple use and it lasts longer than they claim...." Read more

18 customers mention18 positive0 negative

Customers are satisfied with the speed of the weed moss control agent. They mention that it works slowly and takes several days to see results. However, it is efficient and makes it super easy to remove the mosses.

"...I use it alone and it is perfect! Not fast like many of these weed-killers say, no, it's the waiting game eve on the big, back jug, O!..." Read more

"...It’s amazing and efficient and makes it super easy to remove the weeds after they are dead." Read more

"...It is a contact killer, BUT it works slowly and takes several days to see results...." Read more

"put it in a bottle sprayer hooked to a hose, no pumping, job is done quickly." Read more

268 customers mention184 positive84 negative

Customers are mixed about the quality of the weed moss control agent. Some mention it works great, is brutally effective, and is perfect, while others say it's not as effective as they thought, does nothing, and takes about a week to work. Some customers also mention that there's a slight issue with the spraying.

"This produce works very well. For what I mixed up, it took about a week to see a color change, but it will kill." Read more

"Weed killer for dessert landscaping. Excellent product, must use above 70 degrees for 100 percent effectiveness...." Read more

"...It does take time to work, I applied it in January just before the frost started here in Texas and the vegetation was still green...." Read more

"Works every time. Best product I’ve ever used. I recommend it to all my friends." Read more

139 customers mention83 positive56 negative

Customers are mixed about the performance of the weed moss control agent. Some mention it does kill the mosses and weeds, it's excellent for killing unwanted vegetation, and it kills grasses and bushes quickly. However, others say that it didn't work as expected, and the bushes started sprouting up through their gravel.

"Excellent for killing unwanted vegetation. I use it for killing weeds at a baseball fields warning tracks and infield...." Read more

"...same time and close to the same area, as you can see they are not very big weeds and 1 has died completely, 1 looks to be dying but the other one..." Read more

"...It WILL kill anything u put it on, so don’t spray it when it’s any kind of wind or breeze if possible...." Read more

"...It also works for Bermuda grass, which is very hard to get rid of!" Read more

14 customers mention7 positive7 negative

Customers are mixed about the durability of the weed moss control agent. Some mention that it seems to last longer, while others say that it's not as strong as advertised, and the mosses are growing stronger than ever.

"...it can take up to 2 weeks to work, BUT once it does it has great longevity and results!!!..." Read more

"...Do NOT spray this near plants you want to keep alive. They WILL die...." Read more

"...It’s so easy to mix and it lasts a while!! One thing i will say is it usually takes a day or two for all the weeds to die...." Read more

"It doesn’t keep well, but it does kill well. I mix a higher concentration in a pump sprayer...." Read more

Not completely happy with it as of yet
4 Stars
Not completely happy with it as of yet
This Fertilome 33692 Killzall Weed and Grass Killer is a highly concentrated formula but is also a little pricey so I was expecting it to be fast acting and prevent further weed control.So far I am having mixed results. After my first attempt I used 2 ounces per gallon of water in a 2 gallon sprayer.I don't have a huge area to spray, just mostly the annoying weeds that pop up in my gravel drive.It took about 4 days before I started to see results, and this was under very warm and sunny days. Even after a week some of the weeds are still hanging around so I doused them again.So far the weeds that did die off have not come back but I kind of feel like I had to really soak them good to get them to die off.I'm not 100% sure about this product yet and will know more as time goes on this summer.The weeds in these 3 pictures were all sprayed at the same time and close to the same area, as you can see they are not very big weeds and 1 has died completely, 1 looks to be dying but the other one still looks green. This is after 1 week.So far it's Ok.
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Reviewed in the United States on March 13, 2024
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Reviewed in the United States on March 21, 2022
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5.0 out of 5 stars Very effective and a great value for the price.
Reviewed in the United States on March 21, 2022
I purchased a name brand prediluted formulation of this chemical in the past and liked how it worked. I believe I got about 2 gallons for the same price as this bottle here, which makes much, much more than that.

It does take time to work, I applied it in January just before the frost started here in Texas and the vegetation was still green. It took about 3 weeks to completely kill everything it touched, but there were visible dead patches forming after about four days.

It was even powerful enough to kill this bush that's been growing up from under my foundation for years. Even if I cut it down, it always seems to grow back. Not this time.

There is also a large open field that borders my fence line. They cut the grass, but they never cut near the fence, so I end up with this wild mess of weeds, tall grass and thorns that grow over and into the fence. I sprayed this directly on the tall grass and it's all dead.

The main reason I bought this was because half of my lawn in the back was overgrown with weed grass. So in a weeks time, half of the yard would look fine, but the other half would already be 4-5" tall with thick grass. I needed to cover a large area, and I didn't want to spend $60 at the hardware store on pre mixed bottles. This worked great. It's been two months and the only thing that has grown back is a few patches of "clover." You can see in the photo the half I sprayed vs the half I didn't.
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8 people found this helpful
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Reviewed in the United States on May 30, 2023
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4.0 out of 5 stars Not completely happy with it as of yet
Reviewed in the United States on May 30, 2023
This Fertilome 33692 Killzall Weed and Grass Killer is a highly concentrated formula but is also a little pricey so I was expecting it to be fast acting and prevent further weed control.
So far I am having mixed results. After my first attempt I used 2 ounces per gallon of water in a 2 gallon sprayer.
I don't have a huge area to spray, just mostly the annoying weeds that pop up in my gravel drive.

It took about 4 days before I started to see results, and this was under very warm and sunny days. Even after a week some of the weeds are still hanging around so I doused them again.
So far the weeds that did die off have not come back but I kind of feel like I had to really soak them good to get them to die off.
I'm not 100% sure about this product yet and will know more as time goes on this summer.
The weeds in these 3 pictures were all sprayed at the same time and close to the same area, as you can see they are not very big weeds and 1 has died completely, 1 looks to be dying but the other one still looks green. This is after 1 week.
So far it's Ok.
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