Dr. JImZ Water Audit Kit is an easy-to-use system. Included in the kit are four measuring cups. Spacing the cups throughout the lawn and running your sprinklers for 15 minutes will tell you how much water is getting applied in specific areas of your grass. Your lawn needs one inch of water a week. Determining how long it takes to apply this much water isn't done by just eyeballing it. Using the Water Audit Kit will give you a visual representation of the amount of water your lawn is getting. You'll be able to rule out potential bug or disease issues and pinpoint sprinkler issues.