BASF Drive XLR8 Crabgrass Killer for Lawn & Turf, Post Emergent Grassy & Broadleaf Weed Control, Active Ingredient Quinclorac, 30 Day Residual, Herbicide, Concentrate 64 Ounce

Works great as advertised. Kills the crabgrass quickly.

Drive XLR8 kills crabgrass - amazingly well. I applied it per the instructions, with Methylated Seed Oil, and it killed the crabgrass dead - not just a little dead, but brown, curled-up, dried-up desicated corpse dead - in two or three days. It did not hurt desirable grass at all (tall fescue in my case). It is pretty selective - it kills crabgrass, but not much else.If it did NOT work for you, there are two possibilities (a) you've got an undesirable grass-like weed that is NOT crabgrass; or (b) you have real crabgrass, but did not read the label directions, which say that it will control crabgrass at the 1-tiller stage (early spring), or the 5+-tiller stage (fully grown, late summer) - but intermediate stages "may require multiple applications". Do your homework -> Google "crabgrass tiller stages" to see what those stages are. If you missed early spring, wait until August when the crabgrass is fully grown and is in the 5+tiller stage. Drive XLR8 will kill it dead-dead then.There are a lot of undesirable grass-like weeds that look like crabgrass. I've got 'em all - and Drive XLR8 does NOT kill them - it only kills crabgrass, and it does that very well. Straight 2,4-D, or Weed-B-Gone/Weed Clear or Trimec are the first choices for those other weeds. You can even mix them in the tank with Drive XLR8 - read the label!If it killed your whole lawn - Your whole lawn had probably been taken over by crabgrass. Crabgrass is nasty, invasive stuff, and Drive XLR8 did what it was supposed to do - it killed the crabgrass.For me - Drive XLR8 works exactly as advertised. I can't recommend it highly enough.

My neighbors don’t do anything to prevent crabgrass in their yard so I’m always fighting to control it in my yard. The overspray helped kill the crabgrass on the edge of their yard and therefore controlled it from coming into my yard. Yay! It’s such an invasive weed.

Killed the majority of the crabgrass in a week, the follow up application 2 weeks later killed all the rest.

I applied this product along with Gordon's SpeedZone Lawn Week Killer (+ surfactant and blue dye) to a concentrated area of clover as well as an area of crabgrass on July 28th. The yard got a lot of rain starting the day after application therefore I didn't have to manually water it. As you can see on the photo I included, 2 weeks later the clover is completely gone. I can't say with certainty that this product is fully effective since I did mix it with another product, but I have to believe that it must have helped.As for the crabgrass which I did not take before/after photos of, it is also getting relatively dried out. I will likely do another application to the crabgrass in a few weeks to see if it will help to dry it out/eliminate it further. If so, I'll provide an update on that after some time.So far though, I am very pleased with its results!

Be sure you are trying to kill crabgrass! Will not impact Dallis Grass or Poa Annua. Just saying to examine the weeds you are trying to control.

My Neighbor stated that his friend who is a Botanist told him it was no use fighting the weed that was in our yard. Claimed it wasn't crab grass but some other weed that is impossible to kill with-out wiping out the lawn. Boy did I prove him wrong. A little research and I found this stuff, it does exactly what it says. I used it to kill the Crabgrass that had taken over the lawn of the house I just moved into. Nothing else worked. This does. One treatment and the Crabgrass is gone. Regular grass may suffer a little but it recovers. I use 2 oz. of Drive XLR8 with 1.5 oz. of Turf Mark Blue (I tend to spray a little much) and 1oz of Southern Ag Methylated Seed Oil (MSO) Surfactant per gallon of water, and it is a one shot kill when it come to crab grass. After two days you can tell that the Crabgrass is turning yellow. after a week, it is dead. Mine has not come back yet. I started with a small side yard to make sure it doesn't wipe out the grass, and it did not. Due to the amount of Crab grass it's hard to see if did lose some grass, but in the end, I have a healthy crab grass free lawn.It probably helped that put down lawn fertilizer a few days earlier.To those that claim it does not kill crab grass, either your using it wrong, or your not fighting crabgrass but rather some sort of other weed.