Keretse niba bisobanuwe ukundi, ibicuruzwa bya sulfuru bigomba kubikwa mukarere kwumye, gakonje kandi kitoroshye. Ikoreshwa neza mugihe cyamezi 12 nyuma yitariki yo gukora. Sulfuru igomba kuguma mubipaki byabo byumwimerere kugeza mbere yo gukoreshwa. Ibicuruzwa bya sulfuru birakwiriye gutangwa ninzira yubwato, gari ya moshi, cyangwa ikamyo.