Are pizza boxes recyclable?
Usually yes
Yes — empty the box and recycle it with cardboard. Grease is not the problem people think it is, but leftover food is.
What you need to do
- Empty the box completely — leftover crusts and toppings are contamination, and always were
- Remove the plastic pizza saver and any paper liner
- Flatten it so it sorts correctly and takes less space
- Tear off any section soaked through with oil
Why the answer isn't simple
Three different questions hide inside "is this recyclable?" — and most pages only answer one of them.
Is the material recyclable? yes
What the stuff is made of, in principle.
A pizza box is corrugated cardboard, one of the most valuable and widely recycled materials in the stream. Industry testing found that grease and cheese residue at the levels typically found on a used box does not interfere with repulping. The long-standing belief that grease ruins the batch overstates the effect.
Will a sorting facility recover it? yes
What actually happens on the line.
Sorting facilities handle pizza boxes with other corrugated cardboard. The box's size and rigidity make it easy to separate mechanically. Boxes soaked through with oil are a different case — saturated fibre has already broken down and adds little value.
Will your curbside program take it? varies
Local policy, which is where answers diverge.
Acceptance has shifted notably in recent years as the grease research circulated, but programs have not moved in step. Many now accept pizza boxes outright. Some — New York City among them — direct them to compost instead, which is also a legitimate route. A minority still refuse them. This is the layer where the answer genuinely depends on where you live.
Source: NYC Department of Sanitation
Where else it can go
Composting
Cardboard composts well, and a greasy box is a better fit for compost than for recycling. Some cities direct pizza boxes here as the preferred route.
Remove any plastic pizza saver and all food first.
Tear and split
If only the base is saturated, tear off the clean lid and recycle that. The oily base goes to compost or landfill.
Common mistakes
- Leaving a slice or crusts in the box — food is the actual contaminant, not grease
- Leaving the plastic pizza saver in the middle
- Recycling a box that has soaked through completely