The insoles themselves can be soaked and then air-dried, while you can just hose muck off of the shoes, and there are replacement insoles available.
Ama-insoles ngokwawo angagcotshwa bese omiswa emoyeni, ngenkathi ungakwazi ukumane ukhiphe izicathulo, futhi kukhona ama-insoles angafakwa esikhundleni.