To clean Birkenstocks, brush off loose dirt, then scrub the footbed with an old toothbrush, a little water and leather shampoo (or a baking soda paste). Wipe the lather away with a damp cloth, clean the straps to suit their material, and let the pair air-dry for at least 24 hours, away from sun and heat.
Below, we go through it by part and material: the footbed, suede, leather and oiled leather, cork, clogs like the Boston, white pairs and soles, plus how to get rid of a smell. The one rule that applies to every pair: never submerge them. Birkenstock’s own care tips warn that soaking can break down the sealants, and heat from sun, radiators or a hot car can damage the cork and soles.