Ubwubatsi bwa PU butanga uburebure burambye kandi bwiza bwo kubika ibintu; ibikoresho ntabwo ari uburozi, ntiburyoheye kandi byemewe guhura nibiryo.Indobontizize icyuya cyangwa ngo gisohoke, kandi ntigishobora kumeneka hamwe no gukoresha bisanzwe.Ibikoresho hamwe na robine kuruhande, urashobora gukoresha mu buryo butaziguye igikombe kugirango wakire amazi ava muri robine munsi yindobo ya barafu, ugabanye inshuro ufungura indobo umupfundikizo.7.5gallonindobo nini, gukurura inkoni isimbuza ikiganza, ikiza igihe n'imbaraga nubwo bifite ubushobozi bunini.