Gunnedah Police are disappointed residents seem to have not listened to previous warnings on vehicle safety, if recent criminal activity is any indication.
In the south-western area of Gunnedah, at least three cars were broken into during the night and into the morning of February 24-25.
Wallets, a satellite phone and an air compressor were among the valuables stolen from the cars.
At least one vehicle was left unlocked and others had valuables left inside them in plain sight.
Police have again urged residents to lock their vehicles when they are unattended; and to not leave valuables in sight, to take them inside the home or secure them in the boot of the vehicle.
They also suggest installing sensor lights in the garage or driveway.
If anyone has information with these or any other crimes, contact Gunnedah Police Station on 6742 9099 or Crime Stoppers on 1800 333 000.