Sweep cobwebs, dirt and other debris from the furniture with a broom. Use a broom to loosen and sweep away as much debris as possible. Work the bristles of the broom into the crevices of the wicker.
Connect a brush attachment to the hose of a vacuum cleaner. Vacuum between the woven wicker and in hard to reach areas of the wicker furniture to remove accumulated dust and pollen.
Mix a solution of water and mild detergent. Dip a rag into the solution and wipe down the wicker furniture. Pay special attention to areas of stubborn dirt or stains. Wipe the wicker with a clean rag dipped in only water to rinse.
Place the wicker furniture in a warm and sunny location to thoroughly dry after wiping down and rinsing. Allow the furniture to completely dry to avoid formation of mold or mildew.
Cover wicker furniture with outdoor furniture covers or a tarp, if necessary, to help reduce the accumulation of dirt, dust, pollen and debris.