Dartmoor still has a misplaced reputation for being a high-security prison that is escape-proof. As a Category C prison, Dartmoor houses mainly non-violent offenders and white-collar criminals. It also holds sex offenders and offers sex offender treatment programmes intended to make the offender realise their behaviour is unacceptable. Some inmates subsequently volunteer for behaviour-changing treatment with medication under a scheme being piloted at HMP Whatton, which has had encouraging results.