Customer Reviews for Certainty Herbicide - 1.25 oz.

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Average Customer Rating

4.4 of 5 stars
(37 customer reviews)
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  • 1 of 5 Stars

    Didn't work on my lawn

    By Jason on 04/18/2017

    Didn't touch weeds in my Bermuda lawn. Been 2 1/2 weeks with ZERO effect on any variety. Read directions carefully. Mixed in back pack sprayer, with surfactant, and blue marking dye to see overlaps. Disappointing.

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    5 of 12 people found this review helpful

  • 1 of 5 Stars

    Certainty herbicide

    By Donald on 05/09/2017

    Product did not kill anything that it was suppose to... didn't even kill dandelion. Waste of money

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    5 of 16 people found this review helpful

  • 1 of 5 Stars

    Didn't do anything to Quackgrass

    By Sharon on 11/01/2021

    I have a couple patches of quackgrass and this was recommended on multiple websites. From reviews, the quackgrass should have started browning in a week. It has not, in fact it appears to be flourishing. I am going to give the second treatment in a few weeks. Maybe I will see something after that.

    Expert Response  Expert response:
    You may notice signs of the quackgrass dying (discoloration-yellowing or browning) within 2-3 weeks after you have applied Certainty but it is normal not to see anything for at least a month. Per the product label, you can make an additional application 4 or more weeks after the initial application as needed. Best results are obtained when target weeds are actively growing & not disturbed by mowing for at least 2 days before and 2 days after application. Warm, moist conditions following application will accelerate activity; cold, dry conditions will delay activity. Drought stressed weeds are less susceptible.

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    4 of 4 people found this review helpful

Displaying 1 to 3 (of 3 reviews)