Irivethi eyimfama enemibala ipeyintwe njengemfuno yomxhasi.
Iirivethi ezimibalabala ezinemibala eyahlukeneyo zitshizwe ngetekhnoloji yokubhaka ivanishi yamva nje, kwaye ziphawulwa ngenkangeleko entle, ukuxhathisa ubushushu, ukuxhathisa kweasidi, akukho mbala, njl.Kwaye usetyenziso kwiimeko lufuna ukuhambelana nezixhobo ezinombala ofanayo.