Regular cleaning of cane and wicker furniture is essential for lasting durability. The key idea is to be gentle: Martha likes to add just a small amount of detergent or oil soap to a bucket of warm water, then dunk a soft-bristled brush into the solution and carefully brush it over the piece. The chair should then be dried off with a soft cotton cloth (such as an old dish towel). If a wicker piece is very dirty or dusty, vacuum it first, then clean with a brush. While you are cleaning, check over the piece for any breaks or loose pieces; if they are minor, you can repair them with wood glue. After cleaning, allow wicker furniture to dry completely (in the sunlight, if possible) before using.
The biggest enemy of cane is dryness. To care for your cane furniture, simply mist it with plain water from a spray bottle about once a month. Be careful not to soak the cane. If the surrounding wood gets wet in the process, wipe it dry with a soft cloth.