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Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White

4.5 4.5 out of 5 stars 657 ratings

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Killer (64 Ounces)

Purchase options and add-ons

Brand Primesource
Item Weight 0.01 Ounces
Liquid Volume 64 Fluid Ounces
Item Form Liquid
Active Ingredients Quinclorac, Herbicide

About this item

  • KEY FEATURE: Selective, post-emergent herbicide that can be safely applied to many types of turf to control a variety of broadleaf and grassy weeds
  • USE SITES: Residential Turfgrass & Non-Residential Turfgrass
  • EFFECTIVE AGAINST: Crabgrass (large & smooth), Foxtail (giant, green & yellow), Kikuyugrass, Signalgrass (broadleaf), Torpedograss, Bindweed (field), Clover (hop, red & white), Daisy (english), Dandelion, Dollarweed, Geranium (Carolina), Morningglory spp., Speedwell (common, slender & thymeleaf)
  • ACTIVE INGREDIENT: Quinclorac 18.92%

Customer ratings by feature

Easy to use
4.4 4.4
Value for money
4.1 4.1
Style
4.0 4.0

Frequently bought together

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Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White
Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White
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Price$61.93$39.99$39.99$69.99$35.71$13.99
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to use
4.4
4.1
4.3
4.1
4.1
4.3
Value for money
4.1
3.6
4.1
4.1
3.4
4.2
Accuracy
3.6
4.0
4.1
4.3
Sold By
A to Z Lawn Supply Store
Bluewater Chemgroup
Prosentyx, LLC
Bluewater Chemgroup
A to Z Lawn Supply Store
Bluewater Chemgroup
liquid volume
64 fluid ounces
8 fluid ounces
8 fluid ounces
16 fluid ounces
32 fluid ounces
236.59 milliliters
active ingredients
Quinclorac, Herbicide
Mesotrione
Mesotrione
Mesotrione
2,4-D, Dicamba, Quinclorac
Concentrated FD&C 1
form
Liquid
Liquid
Spray
Liquid
Quart
Concentrated
weight
0.01 ounces
8 ounces
8 ounces
1 pounds
6.4 ounces

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Primesource

Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer (64 ounces), White


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Product Description

Quinclorac 1.5L Select™ is a selective, post-emergent herbicide that can be applied to many types of turf, both residential and non-residential, to control a variety of weeds. Quinclorac 1.5L Select™ can be applied from 7 days before seeding and up to 28 days after emergence on selected weeds.

Customer reviews

4.5 out of 5 stars
4.5 out of 5
657 global ratings

Customers say

Customers like the effect and quality of the weed moss control agent. For example, they mention it works well, it eliminates crabgrass quickly, and it's easy to use. Opinions are mixed on the value.

AI-generated from the text of customer reviews

51 customers mention41 positive10 negative

Customers like the effect of the weed moss control agent on crabgrass. They say it definitely kills the crabgrass within days, wipes it out, and is lethal for crabgrass in 48 hours. Some say that it does not touch other weeds.

"Destroyed my crabgrass quickly! Did not touch other weeds, but that's ok." Read more

"Great to get rid of crabgrass. Does not harm other grass, somehow it knows to just kill the crabgrass...." Read more

"...Overall I would recommend this as it did kill most of the crabgrass and did not harm my fescue. Bumped it down a star for only killing 70%." Read more

"...way but I’m glad to have found a product that does effectively kill any and all crabgrass" Read more

47 customers mention47 positive0 negative

Customers are satisfied with the quality of the weed moss control agent. They mention that it works well, is effective, and easy to use. Some say that the product is very potent and works great on tall fescue. Overall, most are happy with their purchase and recommend it to others.

"Best product I've had. See results in 3 days. 2 oz of Quinclorac and 2 tsp of Methylated seed oil per gallon. Used atv sprayer...." Read more

"...Very potent, I only use about 2 tablespoons in a gallon of water in my pump sprayer. A little goes a long way...." Read more

"...Great product." Read more

"...Southern Ag Methylated Seed Oil as others have recommended and it worked great. My crab grass is turning yellow and dying." Read more

8 customers mention8 positive0 negative

Customers are satisfied with the effect of the weed moss control agent on their lawns. They mention that it does not harm their fescue, Kentucky bluegrass, or crabgrass.

"Great to get rid of crabgrass. Does not harm other grass, somehow it knows to just kill the crabgrass...." Read more

"...would recommend this as it did kill most of the crabgrass and did not harm my fescue. Bumped it down a star for only killing 70%." Read more

"...It did not harm my fescue (in fact, it looks stronger), and killed the crabgrass within days. Highly recommend it!" Read more

"...This resulted in a 99% kill rate and no harm to the fescue." Read more

15 customers mention7 positive8 negative

Customers are mixed about the value of the weed moss control agent. Some mention it's a good value, while others say it was a waste of a lot money.

"...This stuff is expensive for a regular homeowner with less than a 1/4 size acre so I hope the shelf life is long so I can get my monies worth over..." Read more

"...cool season weeds.. When you unit shop,this products it’s extremely cost effective." Read more

"...Just like adding Ketchup and mustard to a hamburger. Expensive to get no results. If I am doing something wrong would like to hear about it...." Read more

"...Great product and the gallon size is a great value." Read more

If you want to get rid of Crabgrass, this stuff can't be beat
5 Stars
If you want to get rid of Crabgrass, this stuff can't be beat
Great to get rid of crabgrass. Does not harm other grass, somehow it knows to just kill the crabgrass. Very potent, I only use about 2 tablespoons in a gallon of water in my pump sprayer. A little goes a long way. I reseeded a large area of my lawn and crabgrass took over in that area. Sprayed it and the crabgrass was killed, allowing the good grass to fill in.
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Top reviews from the United States

Reviewed in the United States on December 14, 2023
Style: Killer (64 Ounces)Verified Purchase
One person found this helpful
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Reviewed in the United States on August 22, 2023
Style: Killer (64 Ounces)Verified Purchase
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5.0 out of 5 stars Works great with Methlated Seed Oil
Reviewed in the United States on August 22, 2023
Best product I've had. See results in 3 days. 2 oz of Quinclorac and 2 tsp of Methylated seed oil per gallon. Used atv sprayer. Second time I also mixed in Trimec weed killer and did crabgrass and weeds all in one application.
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2 people found this helpful
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Reviewed in the United States on January 16, 2024
Style: Killer (64 Ounces)Verified Purchase
Customer image
5.0 out of 5 stars If you want to get rid of Crabgrass, this stuff can't be beat
Reviewed in the United States on January 16, 2024
Great to get rid of crabgrass. Does not harm other grass, somehow it knows to just kill the crabgrass. Very potent, I only use about 2 tablespoons in a gallon of water in my pump sprayer. A little goes a long way. I reseeded a large area of my lawn and crabgrass took over in that area. Sprayed it and the crabgrass was killed, allowing the good grass to fill in.
Images in this review
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Customer imageCustomer imageCustomer image
2 people found this helpful
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Reviewed in the United States on August 30, 2022
Style: Killer (64 Ounces)Verified Purchase
Customer image
Ken
4.0 out of 5 stars Killed off about 70% of my crabgrass
Reviewed in the United States on August 30, 2022
I sprayed my entire yard (about 1/2 acre) with a mix of Quinclorac and Methylated seed oil. Saw good signs of crabgrass and some broadleaf weeds dying off. After the first round it killed about 60% of the crabgrass and my lawn (fescue) was unaffected. I waited a few days and went back and spot treated areas I missed. About 50% of that died off. Overall I’d say it killed about 70% of my crabgrass. There were a couple viney weeds in yard and they just started to yellow about a week after spraying.
This stuff is a bit of a pain to deal with because of the warnings about getting it on skin. I wore rubber gloves, long pants and long sleeve shirt. Not easy on a mid-90 degree muggy day. The methylated seed oil bottle was a pain and very hard to pour. I poured some of it into a cup and the. Scooped out the recommended amount with a teaspoon. Overall I would recommend this as it did kill most of the crabgrass and did not harm my fescue. Bumped it down a star for only killing 70%.
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6 people found this helpful
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Reviewed in the United States on September 13, 2023
Style: Killer (64 Ounces)Verified Purchase
Reviewed in the United States on August 26, 2023
Style: Killer (64 Ounces)Verified Purchase
Reviewed in the United States on July 5, 2019
Style: Killer (64 Ounces)Verified Purchase
14 people found this helpful
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Reviewed in the United States on July 18, 2020
Style: Killer (64 Ounces)Verified Purchase
12 people found this helpful
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