Habitat for Humanity

Okay, I am alarmed. The human placed a call to Habitat for Humanity today. As some of you might recall, that place decided to provide homes for a few bears by having them move in here. The human said she called them to pick up some doors, and other furniture like items, but they are coming in a truck next week. What if more bears are in that truck? Really, I was sure that those people were supposed to build homes, not add more residents to existing dwellings, but it doesn't seem to work that way with the branch around here. How can I make sure they just pick up stuff, and don't drop off anything?