The best way to clean white fabric shoes is with an old toothbrush and some form of a cleanser. Murphy's Oil Soap, liquid laundry detergent, Comet, etc. are all good choices. Air dry. Most shoes can be washed in the washing machine, but it will shorten their lifespan, and may cause some of the glue to come loose. If any stains remain after cleaning, the dye will not likely evenly cover the shoes, so you will want to do as thorough of a cleaning as possible.