Pizza boxes that are clean cardboard, free of grease or food particles can be recycled. If the cardboard is partially greasy, tear away the greasy cardboard and place it in the trash, and put the clean cardboard in the recycling bin.
Reduce and Reuse
If you have pizza boxes (without leftover food or grease) that are in usable condition, consider gifting to someone who might want to use them for a craft project through your local Buy Nothing group.