1. Kwimimandla ethanda ukudubula, kunyanzelekile ukuba iindawo ezivaliweyo zezixhobo zombane ziqhagamshelwe ngokukhuselekileyo kwisistim somhlaba.
2. Xa ukhetha isiseko iingcingo zezixhobo zombane, iingcingo ezininzi ezithambileyo zobhedu, kunye nommandla onqamlezileyo ubuncinci 4 square millimeters, ziyacetyiswa.
3. Kwi qhuma iindawo ezinobungozi, abaqhubi abasisiseko abasisiseko kufuneka badibanise nomzimba osezantsi ukusuka kumacala ahlukeneyo, ukuqinisekisa ubuncinci bemidibaniso emibini eyahlukeneyo.
Isilumkiso: Ukusetyenziswa kwemibhobho ethwele ezinokutsha iigesi okanye ulwelo njengoko abaqhubi abasezantsi akuvumelekanga ngokungqongqo.