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Food + Yard

compost poster no yard waste

What can I put in my gray cart?
All compostable items should go in your gray food+yard cart. You can compost:
Compost Cart
  • Food scraps (including meat, bones, shells, and dairy)
  • Food-soiled paper like pizza boxes and paper napkins
  • Yard trimmings
  • Compostable bags (Cedar Grove approvedlinks to external site)

Download the complete guide (pdf, 2mb).

Help Make Good Compost
  • NO plastic bags in your gray bin! If you want to bag your food scraps, use compostable bags like BioBags or paper bags. See accepted bagslinks to external site.
  • Absolutely NO pet waste or diapers.
  • Use uncoated paper products like Chinet. Coffee cups like you get at Starbucks are not compostable (if empty and clean they may be recycled). Simply because an item is labeled compostable does not guarantee it is accepted in our system - please refer to Cedar Grove for accepted itemslinks to external site. Many compostable products accepted at businesses are not accepted in your curbside cart due to contamination caused by misidentification.
  • "Biodegradable" and "natural" does not mean it's compostable.links to external site
  • Take your yard waste cart to the curb for pickup every week, not just when it’s full. The material inside will start to degrade and be less valuable for composting if you leave it for a long time before putting it out for collection. Don't use your cart for yard waste? You may request to exchange your large cart for a small food scrap only container (you cannot have both containers though). 

Food Scrap BucketFree Countertop Food Scrap Pail
Do you need a container for your kitchen to collect food scraps and food-soiled paper? Email with your address to request one and we will deliver one to your doorstep in the next few weeks.

How to Waste Less Food
food waste stats
The average family wastes 1/4 of the food they buy! Our email course shares ways that your family can eat more of the food you buy, and waste less. Get tips delivered to your inbox about grocery shopping, food storage, sharing food, and more. Sign uplinks to external site for the 7-email series.

Why should I compost?

Learn where you can buy compost and how to use it in your yardlinks to external site.

What happens to my food and yard waste?
All your food and yard waste goes to Cedar Grove composting facilities in Everett or Maple Valley, where it's turned into compost in a matter of weeks. The average household's food scraps and yard trimmings produce five yards of compost each year, according to Cedar Grove.
what happens to compost

Public Works
123 5th Avenue, Kirkland WA 98033
T. 425-587-3800 | F. 425-587-3807
Mon-Fri, 8 a.m. to 5 p.m.

Operations & Maintenance
915 8th St, Kirkland WA 98033
T. 425-587-3900 24/7 | F. 425-587-3902
Mon-Fri, 6:30 a.m.-3:30 p.m.

General Inquiries - Contact us via the: 
Our Kirkland Customer Service Portal