Yes, pizza boxes are recyclable. A study commissioned by the American Forest & Paper Association found that typical amounts of grease and cheese on pizza boxes don’t cause problems for paper mills. This overturns the long-standing advice that greasy cardboard can’t be recycled. About 82% of Americans have access to a community recycling program that accepts pizza boxes.
Why the Old Advice Was Wrong
For years, the common guidance was that any grease on cardboard made it unrecyclable. The concern was that oil would contaminate the pulping process, where cardboard is broken down in water to create new paper products. Testing at actual paper mills showed this isn’t the case. The grease spots and small bits of cheese that remain after you finish your pizza are well within what modern recycling facilities can handle. Paper mills actively want these boxes back as a source of corrugated cardboard fiber.
How to Prep Your Pizza Box
You only need to do two things before tossing a pizza box in the recycling bin:
- Remove all food. Leftover slices, crusts, and large globs of cheese need to come out. Small bits of stuck-on cheese are fine.
- Remove non-cardboard items. Take out plastic supports (those little “tables” in the center), dipping sauce cups, wax paper liners, and any plastic wrap.
That’s it. You don’t need to scrub the grease stains, cut off the greasy parts, or do anything special with the box. Flatten it if your bin is tight on space, and recycle it like any other piece of cardboard.
When a Pizza Box Is Too Far Gone
There is a limit. If the box is completely soaked and saturated with grease to the point where the cardboard is falling apart, it’s no longer a good candidate for recycling. This is rare with a typical pizza order but can happen if a box sat in pooled oil for a long time or got drenched with sauce.
In that case, you have a couple of options. If your area offers commercial composting (sometimes called “organics” collection), a grease-soaked box breaks down well in that system. Corrugated cardboard is compostable, and the grease actually helps the composting process. If neither recycling nor composting is available, tear off any clean portions of the box, recycle those, and trash the rest.
Check Your Local Program
While 82% of the U.S. population lives somewhere that accepts pizza boxes for recycling, that still leaves nearly one in five people in areas where the local program doesn’t. Some communities have contracts with recycling haulers that specifically exclude pizza boxes, often based on outdated rules that haven’t caught up with the industry evidence. Your city or waste hauler’s website will list accepted materials. If pizza boxes aren’t on the list, it’s worth checking whether “corrugated cardboard” is accepted broadly, since pizza boxes fall into that category.
The material code printed on pizza boxes is typically 21 PAP, which designates standard paper and cardboard. If you see recycling symbols on the box, keep in mind that many of them (like the Green Dot) indicate the manufacturer has paid into a recycling system, not that the specific item is recyclable in your area. Your local guidelines always take priority over whatever symbols are printed on the packaging.
Recycling vs. Composting
If you have access to both recycling and commercial composting, recycling is generally the better choice for a pizza box that’s in decent shape. Recycling recovers the cardboard fiber and turns it into new paper products, which offsets the need to harvest fresh wood pulp. Composting, on the other hand, converts the material into soil amendment, which is useful but doesn’t displace new raw materials the way recycling does.
Composting makes more sense when the box is heavily soiled. A grease-saturated box has lower-quality fiber that’s harder to process at a paper mill, so sending it to composting keeps it out of the landfill while still producing something useful. Think of composting as the backup plan for boxes that are too messy to recycle but too wasteful to trash.