Jeremy from Harrisburg, Il writes
I use Roundup Pro concentrate that comes in a 2.5gal jug. I've been using 8-10oz to fill my 4 gal. sprayer. The weeds start to yellow within 3 days and kills completely within 2 weeks except for mares tail (horse weed), but weeds and grass come back after 1 month in my driveway.
Roundup Pro Concentrate can applied in a hand held pump sprayer at 2.4-4 fl oz per gallon of water. You will use the finished solution within 24 hrs of mxing. Please refer to the product label for full mixing and application instructions. It can take several applications to achieve the desired results and you may notice visible effects on most annual weeds occur within 2 to 4 days. Keep in mind that this is only a post-emergent herbicide; it does not prevent new weeds from germinating.
Answer last updated on: 07/07/2017
