Surveys
Thieves who are very daring will go door-to-door, posing as surveyors. They can canvass a whole neighborhood, gathering critical information about who lives in each house and when they visit. This door-to-door fraud also allows burglars to see what's inside each property. They can view all of your belongings if you have a guard dog and a variety of other details that will help them evaluate whether or not your home is worth breaking into.
People are often willing to share information about their employment and how many people live in their homes, especially if the surveyor is nice and makes it appear as if there is a potential benefit for the homeowner in doing so. Giving out such personal information to strangers should always be done with caution since you never know how they may utilize it.