I've been buying Roundup for years. It hasn't been really good on broad leaf or vines for some time. I've been adding Brush B Gone to the brew and, it really does a job on what grows. However, my last application of Roundup was very dissapointing. The grass and weeds arn't dying like before. Well, wouldn't you know it? The marketing genius put the monkey wrench in the gears. I used to buy the Roundup concentrate @ about $80 a 1/2 gallon. But it has changed. Now when you buy it, you better check the color of the cap and the terminology. The red cap is "concentrate". It may kill diddly. It's now the middle of the road product. Purple cap is "super concentrate" and will kill diddly squat. The gallon "jug" is 'Pro Formula". It better kill everything and diddly squat. I think anything below the concentrate you can drink. These bozos add water to the product and cut the price so us numbskulls think we're gettin a bargain. I'm writting a letter of disapproval of their strategy. Meanwhile, better know your Roundup.