No notes
Never leave notes on your door, even when you're at home.

Make your mark
Permanently mark your valuables to make it easier for the police to return them to you if they are stolen. Social Security numbers and driver's license numbers with a state abbreviation work best. Keep a record of marked objects.

Make noise
Tune the stereo or TV to your favorite station when you leave the house. To a burglar it means that someone's home.

Don't provide access
Close and lock garage doors to protect valuables stored there and to prevent access to your house.

Park in the driveway
Park an additional car in your driveway or ask a neighbor to park there. It gives the appearance that someone's always home and prevents burglars from backing a van into the drive for easy loading.