Kills poa annua in centipede

By Rich in Columbia, SC on 02/22/2015

After fighting poa annua for the last few years it is good to find something that works. It seems expensive for such a small amount of product, but the amount used per gallon of water is so small it …

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It killed Johnsongrass!

By Anonymous in Southern Illinois on 07/01/2013

After trying many products to kill johnsongrass, tried Certainty and in 10 days the grass was dead!

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Quackgrass Dead On Arrival!

By Ken in Indian Trail on 05/26/2016

Used properly per instruction, quack grass started turning yellow on 3rd day, bright yellow by the 7 day, and wilting over 2 weeks out. Must use the Dyne Amic with this product. See my other review fo…

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Awesome

By Jeff in Montgomery, Alabama on 07/07/2015

I had a bad infestation on nutsedge and we were getting a lot of rain everyday decided to mix it up and give it a shot in front of the rain one day only three hours before receiving half an inch of ra…

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Worked! Killed Quack and Crab Grass Not Kentucky Bluegrass

By Tracy in Northern Utah on 06/18/2020

I was worried about using something this expensive and not knowing what I was doing. We also have Kentucky blue grass and I did not see that it was one of the approved grasses that it would not hurt. …

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Green Kyllinga in Florida St Augustine grass

By Homeowner in Florida on 04/30/2014

I applied Certainty to my St Augustine lawn in April. The St Augustine did not show any signs of stress. Kyllinga did not shrivel up and die the next day, but it did stop coming up in my lawn. I'm ver…

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The best results ever!

By Dennis in Leland, NC on 08/08/2015

This stuff really works. Results are slow, 2-3 weeks, but follow directions, use a good quality surfactant, and watch weeds disappear. Even with the blistering heat from this summer, no turf damage, n…

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Very Effective

By Michael in Buford, Ga on 05/15/2020

This is impressive. I have tried using products sold at local retailers to kill Poa Annua, and have had poor results. I balked at this at first, due to price. After buying, I applied according to the …

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Using Certainty

By Marilyn in Kiln, MS on 10/02/2016

Works well in Sprayer. Expensive but if it rids yard of certain weeds, I am all for it. In the South, we really have a problem with Nutsedge.

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Good but a bit slow

By Charles in Athens AL on 08/30/2016

Another product, like Metsulfuron, that I use to remove cool season grasses from Bermuda, but which also works on sedges, and is similarly slow like Metsulfuron. Wait a week or two in spring and the p…

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Great product

By Shareem in Fort Worth TX on 05/08/2016

Certainty worked better than I expected . I used it to control Tall Fescue in my Bermuda during spring .It worked incredibly well ! It also destroyed crabgrass nuts edge and every other weed listed on…

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Nutsedge infestation

By Reuben in Clovis on 07/24/2020

After spending hundreds of dollars in the last three years with a professional weed control company trying to control Nutsedge that has taken over my lawn I finally searched online to see if I could f…

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Great spot treatment product

By Eric in Oxford on 07/05/2019

Great sedge control... excellent turf safety. Many summer annual broadleaves are controlled by this as well.

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Expensive but works well

By Jim in Chadds Ford, PA on 05/12/2015

Effective at controlling quickgrass.

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Certainty Herbicide

By Jason in Atlanta, GA on 03/23/2018

Went down fine, I used some blue dye from tractor supply and 80/20 surfactant I also got there. I used a 4 gallon back pack sprayer which per the directions of it was basically 2 large scoops per gall…

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Certainty herbicide

By Donald in Albertville mn 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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Didn't do anything to Quackgrass

By Sharon in Crosby, TX 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 flourishi…

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Didn't work on my lawn

By Jason in Little Rock 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. D…

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Very Effective on Nutsedge

By Ken in Liberty Hill, TX on 08/21/2020

So far this product has been very effective on controlling the nutsedge in my yard.

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POA's greatest enemy?

By Philip in Winston on 03/12/2022

Initial results on eliminating POA in my dormant Bermuda have been impressive. Don't forget the wetting agent. Two weeks to see yellowing, however, even with the warmth and rain, germinated POA has be…

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Certainty Herbicide

By Al in Texas on 05/09/2017

Used as directed for nut sedges, first attempt very poor results. After three weeks, will reapply and will post update. The very thick nut sedge I had to use Round Up because it has taken over that ar…

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REALLY WORKS!!!!

By Ogsan1 in Charlotte,NC on 09/18/2021

Bought it off of a recommendation. Glad I did within 48 hrs I saw results. Pick this product up. You won't be disappointed.

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My Certainty

By Ronald in Cibolo, Texas on 07/24/2020

After talking to Customer Service they recommended I use Certainty for control of Dallisgrass. Ordering was easy. Shipping went well. The weather in San Antonio, Texas has been in the high 90's and…

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Great product

By Pete in Madison, Alabama on 07/03/2020

Very effective on Johnson grass. I'm having to learn the difference between Johnson grass, crabgrass and goose grass. They all three look similar. Certainty does great on Johnson grass but takes a cou…

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So far Certainty Herbicide is working!

By Joe in Hanford, CA on 10/20/2017

I applied Certainty Herbicide to eliminate nutsedge from my lawn. It has been over two weeks since I sprayed. The weed has stopped growing. The leaves show some yellowing. Now I am waiting for the KIL…

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Johnson grass

By Brandon in Granbury on 10/02/2020

I had a ton of johnson grass coming up through sod that was installed 2 months prior. The johnson grass was in the yard that wasn't killed prior,I was too impatient. Anyways this product completely go…

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Powerful herbicide that kills poa trivialis

By John in Crofton, MD on 05/01/2020

I thought that this product was overpriced until I read the directions and realized how little is required per gallon. After application, I waited 2 weeks and the poa trivialis is definitely dying. I…

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Kills nutsedge/cool season grasses

By Brandon in Grove, Oklahoma. on 11/14/2022

Bought this to take care of some of the cool season grasses invading my bermuda lawn along with a ton of yellow nutsedge. I did two applications mid summer at the minimum rate (probably could've done …

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Disappointed

By Steve in Florida on 08/06/2024

I live in FL and have all the typical southern weeds. I applied Certainty twice. It rained pretty good after the initial application so I waited a week and reapplied. I haven't seen 1 weed die but it …

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Johnson grass

By Randy in Bullard Texas on 10/27/2023

I used certainty on what I would call Johnson grass broad leaf grass that growers a stem of seeds.the stuff was expensive so I put 3 little scoops about half a teaspoon in 2 gallon of water in a back…

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