Select Source Triad QC Select - 3-Way Herbicide with Quinclorac (Quart) | Controls Dandelion, Clover, Crabgrass, and Many Other Broadleaf and Grassy Weeds

It's a very good herbicide, strong and reliable. Thumbs up!!

Great product seems to work well take a long time to take affect and then all of a sudden the crab grass dies

The main reason I bought this is for a severe Dallisgrass infestation all over my lawn. I get my lawn professionally treated and it didn’t stop the Dallisgrass from emerging. I did a lot of research and this seemed to be the best product. I put some sulficant oil with it. Just an ounce per gallon AND I dyed it blue so I could see the progress. It took about a week to start showing. At first the dallisgrass turned purple at the tips. Then a week later it was dried out and looked like dead weed. Unfortunately Dallisgrass is very sneaky and hides between the blades of real grass. So 5 days ago I took three passes and looked as closely as possible for every bit of it. It maybe slightly turning purple but not much yet plus these were harder spots to see. So I’m hoping for the best. It doesn’t get 5 stars because it doesn’t seem to work as well on standard weeds and crabgrass. I’ve tried in on wild violets for the first time 5 days ago and unfortunately they’re still standing tall so we’ll see. Although I think it knocked out my creeping Charlie which is huge, it’s not on the label and I also sprayed some ortho that day so so can’t be completely sure but Charlie gone bye bye. So far I can definitely recommend this for dallisgrass and so just sprayed some more after the three week waiting period on other weeds so I can’t be for sure yet. I will have to update. Just know that there are very little treatments that work on Dallisgrass so to find something is immeasurable.

I've tried quite a few things over the years, and this is the only thing that will actually kill all the crab grass safely in Bermuda. Follow the instructions, use surfactant, spot spray, and give it time to work. Results are not at the speed of glyphosate, but trust the process and wait. After a few weeks go again lightly on what you under-sprayed.

This herbicide knocked out the crabgrass and clover that other products couldn't touch. I followed the mixing instructions carefully and applied it with a pump sprayer. Within two weeks, the weeds were dead and my grass looked healthier. The quinclorac formula works well on tough broadleaf weeds too. The smell is fairly strong during application, so pick a calm day to avoid drift. The quart bottle covers a decent area, though it goes faster than I expected on a larger lawn. Overall, it does what it promises and is worth the investment if you have persistent weed problems.

It works! It takes about a week to see the effects but the crabgrass is now dead and the grass surrounding it survives.

Worked well, but took a few weeks to see the results which was OK because it did not harm my grass.

Evidently this herbicide is extremely nasty. The full label warns that a fair amount of personal protective equipment (PPE) must be worn. It also warns of how this pesticide is dangerous for fish and other water dwelling organisms. It also cautions not to apply it in windy conditions due to the danger of overspray. Maybe this just reflects my ignorance. I regret having purchased this and feel I need to consult with a hazmat team to get advice on how to dispose of it. This is truly my fault, and not the fault of the manufacturer. Based on what is printed on the accompanying insert, I wonder why this is even available for sale to the consumer. It also wasn’t abundantly clear at what concentration to use the product. As an alternative to using this product, I think I may wait until winter kills the crabgrass, and apply a pre-emergent next spring to get a handle on the problem by suppressing seed germination, provided that the pre-emergent is not equally or more nasty for the environment.