Police are offering free posters to discourage unwanted trick or treaters and to prevent a rise in anti–social behaviour over Halloween and Bonfire Night.
One of the designs can be placed in doors or windows by people who do not wish to be visited by trick or treaters.
Retailers can get posters for their shops telling customers that eggs and flour will not be sold to anyone under the age of 16.
The third poster reminds people of the laws around fireworks, such as it being illegal for under-18s to have them and for fireworks to be set off after a certain time.
As well as handing out the free posters across Derbyshire, Safer Neighbourhood teams will be increasing patrols over Halloween and Bonfire Night to cut out anti-social behaviour.
Officers will be chatting to residents to reassure them that they are out on patrol and will use powers to disperse groups of people who are found to be causing a nuisance.
The No Trick or Treat posters are available from police stations or by visiting www.derbyshire.police.uk.