Iindawo zokugcina imichiza zilikhaya kwizinto ezininzi ezingevayo kubushushu, iikhemikhali eziyingozi eziguquguqukayo, kokubini okuqinileyo kunye nolwelo, ifuna ukuphathwa ngononophelo.
Kufuneka ufakelo, i-airconditioning engaqhumi ibalulekile. Ukungabikho kweekhemikhali ezinobungozi ezinokutsha neziqhumayo, iinkxalabo ezinkulu zithotywa kakhulu.