Canvas can usually be cleaned by scrubbing it with mild laundry detergent. For persistent stains or lighter-colored fabrics, a baking soda solution also helps to clean canvas, according to About.
Canvas is used in items as diverse as shoes, handbags and patio furniture. Canvas shoes should be cleaned by removing caked-on dirt, then scrubbing them using a toothbrush and laundry detergent. Unless the shoes are white, the detergent used should not contain bleach. If persistent stains remain or if the shoes retain foot odor, scrubbing with a baking soda paste should help. While some people wash canvas shoes in the washing machine, manufacturers discourage this because it can harm the soles of the shoes. Canvas shoes should air-dry and not be put in the dryer.
A canvas bag should never be submerged in water for cleaning, as doing so can cause dyes to run and the bag to lose its shape. Instead, they should be spot-cleaned using a gentle laundry detergent and a sponge, then left to air-dry.
Some canvas furniture covers can be removed and machine-washed using gentle detergent; the fabric tags on the covers will state whether this is possible. When canvas furniture covers cannot be machine-washed, they can be cleaned with a solution of gentle bleach-free laundry detergent and water using a scrub brush and sponge. After rinsing, the furniture covers should be left to air-dry. While they dry, it is a good idea to spray them with a fabric protector.