The instructions for this crabgrass killer are just great: Mix .367 ounces per 1,000 square feet. Gee you can use a spreader or a hose-applicator and x-amount of ounces covers an entire acre and so on... Yes at 90 dollars a pound I am SURE to use this great product to cover the entire acre with my 120-lb. broadcast spreader on a really fine setting and wait until early morning so there is dew on the grass so it sticks. Oh, and find a neutral powder to mix it with and of course, again there is NOTHING telling you how many ounces/pound. Guess I could use the garden hose and pray the applicator mixes JUST enough drive75 with the water because if you use too much, it kills other grass, too. Lets get real, crabgrass rarely covers the entire yard. Granted it can cover some large areas, but again, at 90 dollars/pound I am not excited to do anything except spot treatments, and what better way to do it than with a hand-held or a backpack sprayer? So how about if I got a 2-gallon sprayer, how many F*n ounces per gallon of water do I use? .367 per 1k sq. feet don't tell me squat. Alas, one takes the gallon sprayer, fills it with water and goes off spraying a square area and figures out wow, one gallon covers 300 square feet, thus 1/10 ounce of drive per gallon of water is the correct mixture. Still the problem persists, unless you have a digital scale the only thing they give you is a measuring cup that measures 1 or 2 ounces. The solution to this is to just cover the bottom of the cup and that's 1/10th of an ounce. Far as the surfactant or adjuvant or whatever the heck it's called, you can get the stupid oil but that's more money and the only benefit you're looking for is to get the solution to STICK to the grass. What I found works best is run to the dollar store and buy the largest bottle of Ajax or Palmolive (they're both made by Colgate-Palmolive so it's the same stuff) hand/dishwashing detergent and put a SMALL squirt of this stuff in the solution. I like the orange detergent because it smells really good but what it does is it softens the water and this makes the solution stick. Tried, tested, and true. Far as all that other stuff, must be for the birds. No wonder nobody really knows what to do about crabgrass.