The celebration starts on the evening of 31 May. In most Iban longhouses, it starts with a ceremony called Muai Antu Rua (to cast away the spirit of greed), signifying the non-interference of the spirit of bad luck in the celebration. Two children or men each dragging a chapan (winnowing basket) will pass each family's room. Every family will throw some unwanted article into the basket. The unwanted articles will be tossed to the ground from the end of the longhouse for the spirit of bad luck.
Traditionally, when guests arrive at a longhouse, they are given the ai tiki as a welcome. From time to time, guests are served tuak. This would be called nyibur temuai which literally means "watering of guests".
Christian Dayaks normally attend a church mass service to thank God for the good harvest.