Kugwiritsa ntchito phokoso lochepa, kupanga malo abwino:Injini ya ma frequency osinthasintha imagwira ntchito bwino, ndipo pamodzi ndi kapangidwe kabwino ka kutchinjiriza mawu, chipangizochi chimasunga phokoso lochepa pa ntchito yonse, zomwe zimapangitsa kuti chikhale choyenera kwambiri kuyikidwa m'nyumba, m'mapaki a mafakitale, ndi m'ma laboratories komwe kumafunika malo okhala ndi phokoso kwambiri.
Kugwira ntchito mosiyanasiyana, kusintha malinga ndi kufunikira kwa mpweya kosiyanasiyana:Imatha kugwira ntchito bwino pa liwiro lalikulu, poyankha mosavuta zinthu zomwe zimasinthasintha kwambiri pakugwiritsa ntchito mpweya pa mzere wopanga, monga kugwiritsa ntchito mpweya nthawi ndi nthawi komanso kusintha kwa kupanga kwa nyengo, kupewa kuyambitsa zida pafupipafupi ndi kuzimitsa kapena kuwononga mpweya chifukwa cha mpweya wotuluka.
