Aya maguru y'icyuma akozwe kugirango ahangane n'imizigo iremereye, arwanya okiside n'ingese, kandi avanga nta nkomyi mu bikoresho bitandukanye. Hamwe nigishushanyo cyiza kandi kigezweho, ntabwo batanga inkunga nziza gusa ahubwo banatezimbere ubwiza rusange bwibikoresho.