Radio-mics must be worn at all times by the housemates except when they sleep, or when they are in the swimming pool or shower. Housemates must obey the orders of Big Brother at all times. If a Contestant breaks any of the above rules, they can be disqualified. Behaviour deemed inappropriate or offensive and not within the spirit of the show can also lead to disqualification. They do this voluntarily.
Housemates leave the house in three ways.
They may be nominated, they can leave the house of their own free will, or in extreme circumstances, Big Brother could decide to disqualify them. A new housemate may be called in to replace any person who leaves voluntarily or who has been disqualified by Big Brother. This replacement could be a former housemate who had previously been evicted. At any time Big Brother may elect to send in intruders. These intruders will come as a surprise to the housemates.