People are being urged to look out for suspicious activity after a series of shed and garage break-ins.
Since July there have been seven incidents in Hemel Hempstead, including properties in Barberry Road, Spring Land and Cuttsfield Terrace.
To try and put a stop to the break-ins police are raising awareness through patrols, leaflet drops and issuing advice via the online neighbourhood watch system called OWL.
Householders are also being encouraged to bump up security at home to deter thieves.