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Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 32-Ounce

4.3 out of 5 stars 1,105 customer reviews
| 156 answered questions

List Price: $14.99
Price: $11.26 & FREE Shipping on orders over $49. Details
You Save: $3.73 (25%)
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32-Ounce
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  • Rainproof in 2 hours
  • Visible results in as little as 2 to 4 days
  • Contains 41% glyphosate
  • Covers over 25,000 sq. ft.
  • Makes up to 21 gal. of ready-to-use spray
7 new from $11.26

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$11.26 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 32-Ounce
  • +
  • Chapin 20000 1-Gallon Poly Lawn and Garden Sprayer
Total price: $25.18
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Technical Details


Product Description

Size: 32-Ounce

Get to the root and kill grass and weeds with Compare-N-Save 41% Glyphosate Concentrate Grass and Weed Killer. Use for lawn or garden replacement, on patios, walkways, or in and around fences and gardens to remove unwanted grass and weeds. The 2.5 gal. container will treat over 630,000 sq. ft. with visible results in as little as 2 to 4 days. Kills all grass and weeds.

Product Information

Size:32-Ounce
Product Dimensions 3.5 x 3.5 x 9 inches
Item Weight 2.2 pounds
Shipping Weight 2.8 pounds (View shipping rates and policies)
Manufacturer Ragan & Massey Inc
ASIN B00ARKS23A
Domestic Shipping Item can be shipped within U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Item model number 75323
Customer Reviews
4.3 out of 5 stars 1,105 customer reviews

4.3 out of 5 stars
Best Sellers Rank #784 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#5 in Patio, Lawn & Garden > Gardening > Weed & Moss Control > Weed Killers

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From the Manufacturer

Size 16-Ounce 32-Ounce 1-Gallon 2.5-Gallon
Ready-To-Use Equivalent 10 gallons 21 gallons 85 gallons 210 gallons
Coverage Area 3,000 square feet 6,300 square feet 25,500 square feet 63,000 square feet

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By G. Peterson on May 18, 2014
Size: 1-Gallon
A lot of people are confused about the difference between this product and Roundup, so I thought I would share a little information.

The active ingredient in Roundup is a chemical called glyphosate. It was discovered by Monsanto in the 1970's and patented soon after. The patents expired in 2000, so this is a generic version of the product.

Glyphosate only works on actively growing weeds and plants, so you will not get results as a pre-emergent herbicide (i.e. it will not kill seeds, or dormant weeds). The product works somewhat slowly (over the course of several days to a week or longer) because it inhibits certain plant enzymes that are required for plant life function. Because of this "slow" action, some Roundup products also include a defoliant to show more immediate "action". (The defoliant causes the leaves to drop off, but the weed would still live - it is the glyphosate that "kills" the weed).

Most commercially available Roundup products contain between 1-2% glyphosate. This concentrate is 41%. Once a certain saturation level is reached within the weed, applying more (or stronger) glyphosate will not accelerate its death. It is more effective to treat several times with 2% solution over the course of a month, than to treat once with a stronger solution.
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Size: 1-Gallon Verified Purchase
We live on a few acres in the high desert. We have to spray the property on a weekly basis in the summer. We formerly used the name brand product concentrate. When the name brand price hit $100 per concentrate gallon we started looking for a replacement. We have a 4- gallon backpack sprayer. This no name product requires 8oz of concentrate per 4-gallons of water. (Same concentrate as the expensive name brand) This product is 41% of the same active ingredient where the expensive name brand contains 50%. End result: This product is 75% less expensive at purchase. We spray exactly as often as we did with the expensive name brand. The only difference is that this product take about 10-days to kill the weed where the expensive name brand product visibly browns the weed in about 5 days.
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Size: 1-Gallon Verified Purchase
This stuff really works great as long as you have a little patience. I usually just use a little spray bottle of Roundup for small weeds in the cracks of my driveway since there is no point in mixing up a gallon of weed killer just to hit a few small weeds, but I always reach of this stuff when I get lazy about managing the really big patches of weeds in my yard. It has been my experience that it takes between 1.5-2 weeks to see the weeds starting to die, and usually another week or so before the weeds are completely dead. Would I like it to work faster? Sure, but I don't really care as long as the weeds end up dead, which this product definitely delivers on.
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Size: 1-Gallon
This is a generic version of the herbicide ROUNDUP. It kills all plant life by disrupting the production of an amino acid that is essential for cellular regeneration. For this reason, the killing process takes time for the vegetation to brown - usually 1.5 to 2.0 weeks.
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A 15% surfactant is included in the mixture. This agent enables an easier penetration of the active ingredient glyphosate into the plant.
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From experience, the 15% surfactant is not adequate. For this reason, I mix a cup of liquid laundry detergent into the solution. This dissolves the shiny waxy layer on the leaf and enables a quicker and even absorption of the herbicide. The soap-like solution also leaves a thin sticky film. This not only holds some of the glyphosate on plant's surface, but it also seals up the pores for a few minutes - thus preventing the herbicide from evaporating too quickly.
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The product comes in a thick liquid concentration. Dilution is required - 3.2 ounces for a one gallon solution. The cheapest 41% generics in the market is Drexel 2.5 Gallon Imitator. It is sold by Rural King at $45.
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To kill stubborn black berry bushes and hardier vegetation, I use a more toxic solution. I add three pounds of salt per gallon. This browns the plant within a day. The saline also sterilizes the soil and prevents regrowth.
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At $8 for 50 pounds of table salt from a restaurant supply store, this is the cheapest "killer herbicide" mixture. To duplicate with commercial additives, you replace the three pounds of salt with an ounce of diquat and a cup of pramitol. These two chemicals are very expensive. A quart of 37% diquat concentration costs $37 on eBay while a gallon of pramitol sells for $49.
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Size: 32-Ounce Verified Purchase
I have use glyphosate to kill unwanted vegetation on my wooded property for over ten years. This product works as well as the same high concentration as the name brand. So YES, you can reliably "compare and save". I use the higher concentration mixture because I am killing woody plants, invasive plants, and poison ivy, so it was a good value for me because I use it up in one season. I've noticed glyphosate loses some of its potency a year after it has been opened, so I'd recommend you only buy enough to be used up in one season.
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Size: 1-Gallon Verified Purchase
I have a serious weed and crabgrass problem in parts of my property. I've done the whole bring weeds to Home Depot, have them identify it and recommend a weed killer thing. The recommended products only worked for the least hardy weeds. I went to Wal-mart to get Spectracide vegetation killer with a spray nozzle, but it clearly was for tiny things popping out of your driveway, not killing serious yardage of unwanted vegetation and barely did anything.

This stuff works excellently after about a week (small stuff dead, big stuff dying, no exceptions). I use a cheapo sprayer similar to the one recommended for purchase here. Definitely will continue to buy this if I need it again.
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