To clean your gutters youíll need the right tools, and the most important tool for this job is a steady ladder. Leaning an extension ladder against your gutters can damage them. Donít be tempted to hang the bucket from your gutters, since the added weight can damage the gutters. After you have cleaned out the debris, flush the gutters with a garden hose. Next, check for clogs in your downspouts. Unclogging your downspouts is undoubtedly the hardest part of cleaning your gutters.