Amayunithi wokuguqula i-frigeration ayizinto ezibalulekile embusweni wezinhlelo zokupholisa izimboni. Badlala iqhaza elibalulekile ekuguquleni igesi yokuqandisa ibuyele ibe yisimo soketshezi ngemuva kokumunca ukushisa emvelweni. Empeleni, la mayunithi abhekele inqubo yokwenqaba ukushisa, okubalulekile ekugcineni amazinga okushisa aphansi adingekayo ezinhlelweni ezahlukahlukene, kusuka ekudleni pr