Mu nganda zigezweho, uburyo bwo gutwikira ni ngombwa mu kwemeza ibicuruzwa bigaragara neza n’imikorere. Hamwe niterambere ryiterambere ryikoranabuhanga, gusiga intoki gakondo byasimbuwe buhoro buhoro na sisitemu yo gusiga amarangi. Muri ibyo, UV (ultraviolet) yifashishije imirongo yo gusiga amarangi ya spray yahindutse icyamamare mu nganda nyinshi kubera imikorere yazo nyinshi, kubungabunga ibidukikije, ndetse nubwiza buhebuje.
Umurongo wa UV utwikiriye ni umurongo wibyakozwe byikora ukoresha tekinoroji ya ultraviolet yo gukiza. Ihame ryibanze ryakazi ririmo guhita utera irangi neza kurupapuro rwakazi, hanyuma bigakurikirwa no gukira byihuse ukoresheje itara rya ultraviolet. Ugereranije nuburyo busanzwe bwo kumisha ikirere gishyushye, gukiza UV bitanga ibyiza byingenzi nko kwihuta gukiza byihuse, gukoresha ingufu nke, hamwe nubwiza bwo hejuru.
