The Herald Sun is reporting that teenagers are using baby changing rooms at Westfield Fountain Gate to have sex and take drugs, according to mothers.

Mums have said the problem is ‘out of control’ with one hearing noises behind closed cubicles.

The rooms are supposed to offer a private cubicle, microwave and sink for adults to change their children.

However, teenagers have reportedly been using the cubicles for their own personal needs, including microwaving instant noodle.