The quarantine period

If you introduce a guinea pig into your home, you must keep it separate from the other piggies until you are sure that the new piggie is free from any illnesses. The average quarantine period is two weeks. Always introduce guinea pigs gradually, on a neutral surface such as the living-room floor. Guinea pigs "know" each other largely by scent, so it's often a good idea to try to get your scent on the new guinea pig. Sometimes a bath will be needed, if the pig has been neglected or if his coat is matted. If the piggy is otherwise clean, rub a dirty t-shirt or pair of socks on your new friend so that he or she smells familiar to the other(s).