Can you recycle kitchen sponges?

Why sponges are hard to recycle

A typical sponge is polyurethane foam, often bonded to a scrubbing pad made from a different material. It is soiled with food and cleaning products after use. Municipal recycling programs sort paper, metal, glass and certain plastics, and a used sponge is none of those.

Rules are set locally, so the EPA recommends checking with your city or waste hauler. Some mail-back programs take hard-to-recycle items, but they have their own terms and costs, so read them before you sign up.

Because a sponge cannot be recycled in most places, the most useful step is to buy fewer of them and make each one last. A pack of several cheap sponges can cost less per sponge, but if you replace them often the waste adds up faster than a single longer-lasting option.

When you compare options, look at how long each one is meant to last under normal use, as stated by the maker, and divide the price by that time. That gives you a cost per month you can compare across sponges, cloths and brushes without relying on a green claim.

Plant-based sponges

Sponges made of cellulose or loofah are plant material. Some makers sell them as compostable. The FTC Green Guides say a compostable claim should say if the item needs a commercial facility, so look at the exact wording on the package.

A sponge used with food residue or cleaning products is not the same as a clean scrap. If you plan to compost one, check the maker's instructions and your compost program's rules.

Make a sponge last longer

• Rinse it well and let it dry between uses.
• Use one sponge for dishes and a separate one for other cleaning.
• Replace it when it falls apart or smells, following the maker's guidance.

Lower-waste alternatives

Washable dishcloths, brushes with replaceable heads and plant-based sponges all reduce the plastic you throw away. Our eco-friendly sponges guide explains how to compare them by cost per month and how to read the claims on each package.

Sources

• US EPA guidance on checking local recycling rules
• FTC Green Guides (16 CFR Part 260)
• Local waste hauler or city program information