Izinto ezingavuthiwe zithuthelwa emshinini wokubumba umjovo, zishiswe futhi zincibilike, bese zijova esibunjeni ukuze zibunjwe. Ngemva kokupholisa, zikhishwa ngendlela yokuthatha impahla bese zithunyelwa ezansi nomfula ngomshini wokudlulisa. Afakwe amasistimu okulawula, futhi amanye awo aqukethe ukuhlolwa kwekhwalithi kanye namadivayisi wokuqoqa impahla ukuze abone ukukhiqizwa okuzenzakalelayo.