How do you clean a Birkenstock footbed?
Use suede gum or soft sandpaper to remove the stain and use suede cleaner with a suede cleaning brush or toothbrush to rub the surface. Remove the soap foam with wet towels. After drying, brush the nap of the leather with a suede brush. If the footbed is too old or too damaged, then it’s better to replace the lining entirely.