Yup, they know when which neighborhood has a collection day and they just circle in their rattletrap trucks and trailers. The wild thing was that I put it all out at 6am in the dark and literally in the time it took me to walk back into my house through the garage and then glance out the window in my front door while I hung my jacket back up in the coat closet, it was gone. That was what, 2 minutes tops? I didn't see anyone on the street or hear anyone drive up. Freaking ninjas!