Leaf guards are designed to keep leaves and other debris out of your eavestroughs and allows water to run freely through your gutters, down your downspouts and away from your home or business. Clogs in your drainage system may occur from the buildup of decomposing leaves, sticks and other debris. Cleaning out eavestroughs is a dirty and time-consuming job. Installing leaf guards is an effective way to prevent materials from entering your gutters and eliminating the need to continuously clean out the eavestroughs.