Cardboard cereal and pasta boxes are recyclable. Rarely does food stick to the inside, so you can just shake it out.
Remember to flatten it, which works best if you open the bottom first. Take the wax paper bag out of the cereal box and toss it before recycling the box.
If food gets stuck on the box or something oily drips on it, recycling is no longer an option. Then you should throw the box out.

