I've had a guy come in for an hour long, and turn to 4 hours sales pitch and asked to use my room mattress, and asked to use the bathroom. Took 20 mins in there, heard Rustling in my glass wear and drawers. He kept calling his "supervisor" kept sweating even though it was neither hot or cold.
Seemed nervous at the end. A run down green mini can with three sides picked him up. That same car came by several times that week. Ended up hearing they scout houses to rob of valuable items. They get hired within house direct companies just to be able to rob people.
Scout, look and wait till owners are gone then rob.