Derbyshire police say they're receiving a lot of calls from elderly residents about large groups of children knocking on people's doors and windows.
They are asking parents to speak to their children and remind them that this is classed as anti-social behaviour and can be very intimidating for the elderly.
Officers are also reminding people to watch out for their neighbours and call 101 if they see the above happening in their area.

New podcast offers support and advice for unpaid carers
Glossop dad to run 10K for children affected by war in Ukraine
Residents invited to join Peak Cluster awareness walk
Councillors react as Derbyshire council shake-up is paused