Hi-Yield (33692) Super Concentrate Killzall Weed & Grass Killer (32 oz) | Glyphosate 41% super concentrate - Kills weeds & grasses to root, mixes to treat large areas, 32 oz - Serious DIYers

Potent stuff, but doesn't work instantly.

I have a gravel driveway and use this to keep the grass and weeds out. A bottle will last the summer. Couldn't find it anymore at my local coop and was happy to find it here even cheaper. It's concentrated when you mix it with water and a little goes a long way. So much better than the usual name brands you find at the big chain stores. They aren't nearly as effective as this. I notice results in a few days and can nearly go a month before having to spray again. It will get rid of thick clusters of grass and any weed. Make sure you are spraying where you don't want anything to grow. Just follow the instructions that are behind the label.

This herbicide works extremely well. It kills crab grass root and all as well as other weeds. It takes a few days but it is great. You just have to be careful as it kills everything in its path.

This did great to kill an entire section in lawn. This was the goal due to weeds and other infestation. Was able to plant seed about a month later last fall and had great results. This product is good for short term solution but is not meant to be a long term solution on area sprayed. It was already to mix and was exactly what I needed for my project. At the time it was on sale so it definitely was a great value. As with any chemical, be sure to wear proper safety attire. This is relatively harmless to humans following that guidance and directions.

Hi-Yield Killzall Super Concentrate herbicide for controlling unwanted weeds and grass. This 16 oz bottle is ideal for outdoor use in areas such as driveways, sidewalks, fence lines, patios, and other non-lawn areas where vegetation control is needed. Easy to mix and apply according to the label instructions. Please read and follow all safety directions before use, and keep away from children and pets.

This stuff works... You have to give it some time.. It doesn't work over night.. It wiped out a jungle that nothing else worked on... Very happy with this product.. I did up the recommended measurements by twice for a gallon..

This weed killer definitely works. You will start seeing the weeds die out in about 3 days. It says to mix 2 1/2 ounces per gallon. I go 3 ounces per gallon just to give it that extra kill factor. I would definitely buy this product again.

This product works so much better than round up and is a better value. Very easy to mix and spray on the weeds. It has no smell and I didn’t notice any staining on the concrete.