Using a soft-bristled scrubbing brush will help you loosen and remove caked-on dirt without loosening or removing the paint. Then, grab a clean towel and rub away the foam and pat the shoes dry. You should not put your shoes under running water to remove the foam.2 Mar 2022

Soapy water will work. Or a little laundry detergent in some water works the same, though you should exercise caution with that cause to much can cause damage. Toothbrush will get wet when you dip it in the solution. I would say have 1 towel for the sole purpose of drying and 1 towel that is slightly damp.