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Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 32-Ounce
|Price:||$11.26 & FREE Shipping on orders over $49. Details|
|You Save:||$3.73 (25%)|
- Enter your model number to make sure this fits.
- 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
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|Item Dimensions||9 x 3.5 x 3.5 inches|
|Item Weight||2.25 pounds|
|Liquid Volume||32 Fluid Ounces|
|Manufacturer Part Number||75323|
|Shipping Weight||2.75 pounds|
From the Manufacturer
Kill Unwanted Weeds and Grass. ..
in a single application with the concentrated power of glyphosate, the active ingredient in Compare-N-Save Grass and Weed Killer.
For use in the following areas to control unwanted grass and weeds
Driveways and Walkways
Keep pathways clear of weeds and grasses.
Spray along fences to keep your property tamed.
Around Flower Beds and Trees and Shrubs
Spot spray pesky weeds in and around your landscaping.
In and Around Fruit and Vegetable Gardens
Follow label directions for safe use around your edibles.
For Best Results
For best results, apply on a warm sunny day when daytime temperature is above 60°F and no rainfall is forecast for 24 hours. Because this herbicide will kill all green plants including lawn grass it is not recommended for spot spraying in lawns.
Mixes Easily With Water
Use 1.5 ounces (3 tablespoons) of concentrate in 1 gallon of water for general weed control. For tougher weed control of perennials or brush, mix 2.5 ounces (5 tablespoons) in 1 gallon of water. One gallon of ready-to-use equivalent will cover 300 square feet.
Kills To The Root
Be sure to spray the foliage of the treated plants and avoid any spray mist drifting to plants you do not wish to treat. Glyphosate is absorbed through the foliage and travels to the root to kill the plant.
No Residual Activity
Glyphosate is a post-emergent herbicide. It will not prevent new or future growth. Treated areas can be replanted in as little as one day in ornamental areas. See the label for a complete list of when to replant fruits and vegetables.
Top Customer Reviews
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.
A 15% surfactant is included in the mixture. This agent enables an easier penetration of the active ingredient glyphosate into the plant.
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.
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.
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.
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.
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.
Most Recent Customer Reviews
mixed exactly according to directions and treated weeds a week ago. Some turned brown in a couple of days, others are still a nice healthy green. Read morePublished 8 hours ago by Amazon Customer
If you are in a hurry, use vinegar and salt. But it won't last but a few weeks. If you are patient, this is the thing. I sprayed it. Read morePublished 1 day ago by David A. Jones
This stuff works great and will save you money compared to name brand. I highly recommend it.Published 1 day ago by jennifewr
Ok, this is the only thing that has even started to kill the weeds along the no-climb wire fence. Bush B gone didn't work. Read morePublished 1 day ago by CheckAmazonFirst