I have looked into using a cda (Herbi) sprayer, I even bought one, so that I can get by with mixing much less, as these sprayers use about a 1:1 solution of herbicide to water. The less water you have to mix, the less mixing you have to do and the farther you can spray on a tank. I don't think it's gonna work for me tho, all I do is spot treat and it won't be precise enough. What do you people think of using a stronger solution in my backpack sprayers and just giving a quick squirt on the weedy areas as opposed to saturating the weed with solution? Before, I was using about 1.5 ounces of concentrate to 1 gallon of water in a bp sprayer. I'm thinking of going the max recommended rate, 1.5 ounces of concentrate to .5 gallons of water. I'd go twice as far on my backpack sprayer. What do you think and does anyone go even stronger than what is recommended in order to do less mixing?