Eli livumba elikhethekileyo, ukomisa ngokukhawuleza ukutshiza komzimba wabasetyhini
1. Sebenzisa ifomula eyomileyo ekhawulezayo.Iyahlaziya kwaye iyabila.Yithi ndlela-ntle kwimvakalelo encangathi
2. Gcina ulusu lomile kwaye ukhuphe ivumba lokubila
3. Ifomula engenamkhondo ecacileyo, akukho lula ukushiya amanqaku amhlophe okanye amabala atyheli kwiimpahla okanye eluswini emva kokusetyenziswa.