To, idan kuna shirin kiwon kaji a gida, tabbas zai iya amfani da ƙarami. Idan aka yi la’akari da tsararraki suna ƙarawa, ko da ƙaramin injin ƙyanƙyashe na iya ƙyanƙyasar kajin kowane mako 3. Don haka ana iya haɓaka adadin kajin zuwa ɗaruruwa a cikin kakar wasa. Bayan haka, injin ƙyanƙyashe koyaushe yana aiki amma qwai suna buƙatar ƙyanƙyashe sau ɗaya kawai.