Cardboard is pretty easy to recycle, and it is accepted in most curbside recycling programs. In fact, it's valuable and desirable, generating about $100 per ton for recyclers, so you can rest assured your flattened cardboard boxes are definitely staying out of the landfill. When recycling cardboard boxes, be sure to flatten them; it makes transporting them in recycling trucks much more efficient. Also, there's no need to remove labels and tape -- it gets separated out at the recycling plant. But the most important tip: Don't recycle cardboard boxes on rainy days. Wet cardboard is ruined and tossed in the trash.