Since pizza boxes are made of cardboard, it seems pretty reasonable that you could compost them. However, when a company adds fancy artwork, such as Spider-Man, to its box, it doesn't seem quite as clear. What happened? A Reddit user posted a Little Caesars box in the r/composting subreddit and asked, "Is the covering over a Little Caesars' pizza box compostable?" They were most concerned about the red dye used in the artwork. The discussion o…