Mobile phones, wallets, laptops and cash. These are gold mines for opportunistic offenders.
St George Police is urging the community to lock their cars after the command noticed a spike in cars being broken into across all suburbs this year.
Many of the vehicles were found to be unlocked, making it easier for passers-by to nab personal and valuable items including handbags and tools.
Motorists are being reminded not to leave their keys in the ignition, to install an alarm and enging immobiliser, park in a safe, well-lit area close to your destination.
Chief Inspector Craig James said there has been a spike in recent months across the entire St George Police Area Command.
"To be blunt, it is very frustrating as police officers to see people within our command becoming victims of crime when a couple of simple steps can be taken to reduce this occurring," he said.
"Remove your items from your car, particularly those items of value and remember to lock your car. It is that simple.
"It's fantastic to be working with Georges River Council on this issue. We hope to do a similar campaign with Bayside Council in the near future."