You have to read the
product label to determine how much product you should use depending on what type of fungus you have. The Banner Maxx product label will tell you how much to use per 1000 square feet. The label ranges from .5 ounce to 4 ounces depending on which fungus you have. Most herbicide labels will list how much active ingredient should be used per 1,000 square feet. To calibrate your equipment, for example, a 1 gallon sprayer, mark off an area of 1,000 square feet, and cover that area at your normal pace as evenly as possible. If you used the entire gallon, you would use the recommended amount in 1 gallon of water. If you only use ½ gallon to cover the 1000 square feet then you mix the recommended amount on the product label in a 1/2 gallon of water. Ultimately, correct timing and application rates are more important than how much water is used to apply your herbicides.