I-Washers zizinto ezibalulekileyo ezisetyenziselwa uluhlu olubanzi lwamashishini kunye nezicelo zokusabalalisa umthwalo, ukuthintela ukukhulula, kunye nokubonelela ngobuchwephesha bezinto zokubopha. Ngaphezulu kweminyaka engama-30 yamava, siyazingca ngokuba ngumvelisi ophambili weewasha ezikumgangatho ophezulu.