empty the boxes into plastic bins. BB love cardboard and wood.
seriously you have to worry about anything that has been around the area of the bed bugs. i found them in a metal lamp.
buy this stuff: http://www.amazon.com/Bedlam-Bed-Bugs-Spray-Cans/dp/B002Y2WUQ4/ref=sr_1_31?ie=UTF8&qid=1370981710&sr=8-31&keywords=bed+bug+spray
and if you see any, or any evidence of them, soak it.