There are two main types of cardboard that can be recycled - corrugated cardboard which is used for boxes and paperboard which is used for items like cereal boxes. While not all cardboard can be recycled, it is estimated that 77% is recycled in the US according to the EPA. If cardboard cannot be recycled, it can be reused in the garden or as mulch, or used again as storage boxes. Recycling cardboard saves landfill space and energy compared to producing new cardboard from trees. People should contact their local recycling programs to learn what types of cardboard can specifically be recycled in their community.