Most paper towels can go into compost, but not all of them
Plain, unbleached paper towels break down in a compost pile just like other paper products. They are made from wood pulp and will decompose within weeks to a few months, depending on your pile's moisture and temperature. The catch is that many paper towels sold today are bleached, treated with chemicals, or designed to be extra absorbent in ways that slow decomposition or introduce substances you may not want in finished compost.
The safest approach is to check what your paper towels are made from before tossing them in. If they are plain white or brown, unbleached, and have no special coatings, they are compost-safe. If they are ultra-soft, extra-thick, or treated to repel liquids, they likely contain synthetic fibers or chemical treatments that do not belong in compost meant for gardens or food.
Key Takeaways
- Unbleached, plain paper towels break down in compost within weeks to a few months and add carbon to your pile.
- Bleached white paper towels are generally safe to compost because the bleach breaks down, but some people prefer to avoid them.
- Paper towels treated for strength, softness, or liquid-resistance often contain synthetic fibers or chemicals that do not decompose and should not be composted.
- Soiled paper towels used for food scraps, grease, or animal waste can go into compost if the underlying paper is compostable, but paper towels with non-food contaminants should not.
- Shredding paper towels before adding them speeds up decomposition and helps them mix evenly with other materials in your pile.
How to tell if your paper towels are compostable
The label on the package is your first clue. Look for words like "unbleached," "chlorine-free," or "eco-friendly." If the package says nothing about bleaching or treatment, assume the towels are bleached—most mainstream brands are. Unbleached paper towels are usually tan or light brown rather than bright white.
Feel the texture. Paper towels designed to be extra soft, extra strong, or extra absorbent often contain synthetic fibers like polyester or rayon mixed into the pulp. These do not break down in a home compost pile. If the towel feels unusually smooth, silky, or stretches without tearing easily, it likely has synthetic content and should go in the trash instead.
Check whether the towels repel water. If you pour water on a paper towel and it beads up instead of absorbing, the towel has been treated with a water-resistant coating—usually a plastic-based chemical. These towels are not suitable for compost.
Bleached versus unbleached paper towels in compost
Bleached paper towels are safe to compost. The chlorine or oxygen-based bleach used to whiten paper breaks down during the composting process and does not accumulate in finished compost. Many gardeners compost bleached paper towels without issue, and research on compost from bleached paper products shows no harmful residue in the final product.
That said, some people prefer unbleached towels for philosophical reasons—they want to avoid introducing any industrial chemicals into their compost, even if those chemicals break down. This is a personal choice, not a safety requirement. If you want to be cautious, buy unbleached paper towels. If you already have bleached ones at home, composting them is not harmful.
What to avoid composting
Do not compost paper towels that have been used to clean up paint, solvents, pesticides, or other toxic chemicals. These contaminants will persist in your finished compost and could harm plants or contaminate soil. Throw these towels in the trash.
Avoid composting paper towels used to wipe up animal feces or urine, especially from pets or wildlife. While some compost systems reach temperatures high enough to kill pathogens, home piles usually do not. If you use compost on food gardens, this is a real risk. Paper towels used to clean up pet accidents belong in the trash.
Paper towels with heavy grease or oil can go into compost, but they slow decomposition. Grease-soaked towels take longer to break down and can create odor problems in your pile. If you have a lot of greasy towels, add them slowly and mix them well with dry materials like leaves or shredded paper.
How to add paper towels to your compost pile
Tear or shred the paper towels into smaller pieces before adding them. Whole paper towels take longer to decompose because they are dense and do not expose much surface area to microbes. Shredding them into strips or small squares speeds up the process significantly.
Mix the shredded towels with other materials. Paper towels are a "brown" or carbon-rich material, so balance them with "green" materials like food scraps, grass clippings, or fresh plant trimmings. A good ratio is roughly three parts brown to one part green by volume. If you add too many paper towels at once without balancing them, your pile will decompose slowly.
Moisten the pile if it feels dry. Paper towels need moisture to break down, just like other paper products. If your compost pile is too dry, add water or include more wet materials like vegetable scraps. The pile should feel like a wrung-out sponge—moist but not waterlogged.
Paper towels versus other paper products in compost
Paper towels break down faster than newspaper or cardboard because they are thinner and less densely packed. Newspaper and cardboard are also safe to compost, but they take longer—sometimes several months to a year for cardboard. If you want compost ready in a few months, paper towels are a better choice than thick cardboard.
Tissue paper and facial tissues are also compostable and break down at about the same rate as paper towels. The main difference is that tissues are often softer and may contain lotion or aloe, which slows decomposition slightly. Plain white tissues without additives are fine to compost in small amounts.
Paper napkins are compostable if they are plain and unbleached. Napkins with printed designs or patterns may contain inks that you want to avoid, though most modern food-safe inks break down in compost. When in doubt, shred them and add them in small amounts mixed with other materials.
Common mistakes when composting paper towels
The biggest mistake is adding whole paper towels without shredding them. Whole towels clump together, create air pockets, and decompose very slowly. Always tear or cut them into smaller pieces.
Another common error is adding too many paper towels at once without balancing them with green materials. This creates a pile that is too dry and carbon-heavy, and decomposition stalls. Add paper towels gradually and mix them well with food scraps and plant material.
Some people compost paper towels that have been used to wipe up spills or messes without thinking about what the spill was. If you are unsure whether a paper towel is safe to compost, err on the side of caution and throw it away. It is not worth contaminating your entire pile.
Frequently Asked Questions
Can I compost paper towels used to dry vegetables or fruit?
Yes. Paper towels used to dry clean food are safe to compost. The food residue will decompose along with the towel, and there is no contamination risk. Shred the towels first to speed decomposition.
What about paper towels with ink or printed designs?
Most modern inks used on paper products are food-safe and break down during composting. However, if the ink is very dark or heavily printed, you may prefer to avoid it. When in doubt, compost only the plain white or brown portions and discard the printed parts.
Do paper towels add nutrients to compost?
No. Paper towels are mostly carbon and do not add nitrogen or other nutrients to finished compost. They help create the right texture and structure but do not improve the nutritional value. You need food scraps, manure, or plant material for that.
How long do paper towels take to decompose in compost?
Shredded, unbleached paper towels usually break down within two to four weeks in an active, warm compost pile. In a slower, cooler pile, they may take two to three months. Whole paper towels take significantly longer—sometimes several months.
Can I compost paper towels from cleaning up spilled coffee or juice?
Yes. Liquid spills like coffee, juice, or water are fine. The liquid will help moisten your pile, and the food residue will decompose. Shred the towels and mix them in with other materials to avoid clumping.