Can you recycle milk cartons?
Usually yes
In most places, yes. Empty it, and leave the cap on. Carton recycling is common but not universal, so it is worth confirming your program takes them.
Follow it down the line
Three different questions hide inside "is this recyclable?", and the answer can change at each step.
The material · Yes
Is the material recyclable?
A carton is not paper, despite feeling like it. Beverage cartons are typically about 75 percent paperboard, 20 percent plastics and up to 5 percent aluminum foil. The paperboard gives the stability and resistance, the plastic layers, most often polyethylene, keep the liquid in and external moisture out, and the aluminum is a barrier against light, oxygen and chemical migration. The paper fiber is long and high quality, which is what makes cartons worth recovering, but getting at it means separating bonded layers, so it needs a mill equipped for the job rather than an ordinary paper mill. What comes out the other end is worth knowing, because it explains why a carton gets recycled rather than simply pulped. The fiber is recovered, and the polyethylene and aluminum left behind, which the industry calls PolyAl, is a separate output with its own uses and its own difficulties. A carton is closer to an ore than to a sheet of paper: genuinely valuable, and only accessible with the right process.
Sources: Food Packaging Forum: composition of multimaterial food packaging, Carton Council: frequently asked questions
The facility · Yes
Will a sorting facility recover it?
Cartons are sorted as their own commodity rather than simply traveling with paper. The industry's own recommendation is that facilities bale them to Grade #52, which maximizes their value in end markets, though they can also be sorted into mixed paper as Grade #54 where a dedicated carton bale is not practical. The constraint has never really been the sorting. It is whether a given facility has somewhere to send the bale once it has made one, which is why carton acceptance follows processors rather than city boundaries. Cuyahoga County publishes exactly that: residents whose recycling is handled by Republic Services or Rumpke can put cartons in the curbside cart, and residents served by Kimble or WM currently cannot. Same county, same guidance on every other material, different answer on this one depending on who empties the truck. Shape does some work as well. A sorting line separates flat, two-dimensional items from three-dimensional containers by screen before any optical sorter reads a material, so the form a carton arrives in is not irrelevant to where it ends up.
Sources: Carton Council: guidance for MRFs, Atlantic Packaging: Deep Dive, Sorting Recyclables at a Modern MRF
Your curbside program · Varies
Will your curbside program take it?
A clear majority of US households can now recycle cartons, and coverage has grown steadily as more facilities added the capability. The Carton Council puts access at 63 percent of US households, and notes that 86 percent of households which have a recycling program at all have cartons included in it, with access growing by around 2.5 million households, about 1.5 percent of the country, over the course of 2025. The gap between those two numbers is the useful part. Cartons are mostly not excluded because a program looked at them and decided against; they are excluded because the household has no program at all, or because its processor has nowhere to send the bale. Preparation is where programs stop agreeing, so this is one to check rather than to generalize. Cuyahoga County asks residents to let all fluids drain, which is about mold and pests rather than recycling, and then to flatten the carton before it goes in the cart. Not every program wants that, and since the shape a carton arrives in affects which stream it falls into, the instruction that counts is your own program's rather than a rule of thumb from anywhere else. The industry is unambiguous on one point, though, and it runs against the instinct: put the cap back on, and push the straw back into the carton, so that both travel through the same recycling process as the carton instead of being lost as loose small items.
Sources: CuyahogaRecycles: Cartons, Carton Council: Carton recycling access grows by 2.5 million US households
What you need to do
- Empty it: a rinse helps, but pouring out the last of the milk matters more
- Leave the plastic cap on; the industry asks for it, so that it is captured with the carton rather than lost as a loose small item
- Push the straw back into the carton rather than removing it, for the same reason
- Flatten only if your program asks. Cuyahoga does; the shape a carton arrives in affects which stream it lands in, so follow the local instruction
- Plastic film sleeves and any outer wrap come off and go to store drop-off with other film
Where else it can go
Drop-off
Where curbside does not take cartons, a nearby drop-off often will, because the limit is usually the processor rather than the town. The Carton Council runs a postcode lookup built for exactly this question, which is more reliable than guessing from a neighboring city's rules.
Worth checking again periodically. This is the item on the site whose availability changes most from year to year.
Seed starters and craft use
Cut-down cartons are waterproof by design, which is the whole point of the polyethylene layer, and that makes them genuinely good seedling pots, scoops and paint containers rather than a craft-project consolation prize.
Check who processes your recycling, not just who collects it
Since acceptance follows the processor rather than the town, the question that actually resolves it is which company handles your material once the truck is full. Cuyahoga County publishes a processor-by-processor answer for its communities, and most programs will tell you which facility they send to if you ask.
Processors change on contract renewal, so an answer from a few years ago may no longer hold.
Common mistakes
- Putting cartons in with paper on the assumption that they are paper
- Removing and binning the cap, which then falls through sorting screens as a loose fragment
- Assuming a carton is not recyclable because it feels coated
- Pulling the straw out and binning it separately, when the industry's instruction is to push it back into the carton so it goes through the same process
- Taking a neighboring town's answer as your own. Carton acceptance follows the processor, and two communities in one county can get different answers