Food scraps in the landfill create methane – a powerful greenhouse gas.

Composting turns food scraps into a nutrient-rich resource.



New to composting? Check out our helpful guide!

Be a climate hero!


Low on outdoor space? A bin of red wigglers can make black gold.

Backyard composting

Using an open or a fully enclosed compost bin, you can make compost in your own backyard.

Curbside composting

Call your local garbage and/or recycling service to find out options in your area.

Keep curbside compost clean

Call before you haul

  • Call your service provider for a list of accepted materials.
  • Reach out to your city or county for compost guidelines.
  • When in doubt, throw it out!

Contamination costs

  • Contaminated food waste can be sent to the landfill.
  • Composters pay to have things sorted and cleaned – which raises rates.
  • Contaminated compost can create pollution.

Compost bad actors

The most common items that contaminate compost:

  • Glass, metal, plastic
  • Food stickers
  • Foam cups and containers
  • Diapers
  • Pet waste
  • Dairy, meat, animal fat, grease and used cooking oil

How to compost at home

Carrot top with a location marker arrow above it.

Start local

Check your city or county solid waste program's rules before purchasing bins.

compost bin

Choose your method

From worms, compost bins, to uncovered piles. Do what works best for you.

Various leaves and produce food waste that make good composting materials.

Create a balanced diet

Bacteria thrive on a mix of green and brown waste. Check out our User’s Guide to Compost.

Magnifying glass above a pile of compost


Use this guide to solve problems on your composting journey.

For a deeper dive into compost check out  Washington State University Resources.

Wash up and learn more about food waste reduction.