Yes, cardboard boxes must be placed in the recycle bin. Solid Waste no longer picks up boxes that are sitting at the street. You can also take the cardboard boxes to any one of our drop sites. These locations are available 24 hours a day, 7 days a week free of charge. Refer to this link for more information, www.greensboro-nc.gov/index.aspx?page=481 . Thank you.