The paperboard boxes that grocery items like cereal and frozen food often come packaged in are recyclable materials. If the boxes are greasy, soaked or dirty, they should never be put in your recycling, since they are a contaminant. Also, if the box has a small plastic window (often seen in boxes for things like pasta), just peel off the plastic and toss that part into the trash. And, of course, flatten the boxes so you have room in your recycling bin for other recyclables.
ANDREWS MCMEEL SYNDICATION