Neighbours received a visit from their friendly Safer Streets team to help them feel more secure.
Hertsmere Borough Neighbourhood Watch chairman Richard Jarvis took to the streets of Marsh Close and Wayside, in Potters Bar, with PCSOs, firefighters and Councillor Peter Knell.
The day included free security checks, crime prevention advice, fire safety checks and advice on giving up smoking and healthy living.
They were also joined by Medequip, a firm which carries out home safety checks.
Residents who have been selected to receive a Safer Streets visit will get a hand-delivered postcard a few days beforehand.
But people are being warned to ensure representatives from the project have identification, but if they are not sure who is at the door, not to open it.