♦ No mubikoresho byabigenewe, ibishushanyo mbonera ni ngombwa.Birashobora gukoreshwa mubikoresho bidasanzwe, nkibice byihishe kurukuta cyangwa hasi, ameza ashobora kugabanuka, cyangwa ububiko bwihariye.
Mu gusoza, amashusho yerekana imipira ni ingenzi mu nganda zikora ibikoresho.Mugutanga imikorere myiza, kuzamura kuramba, no kunoza uburambe bwabakoresha muri rusange, batanga umusanzu muburyo bwiza nibikorwa byibikoresho bitandukanye.Guhindura kwinshi no kwizerwa bituma biba ngombwa mugukora ibikoresho byiza, bifatika, kandi biramba.