Carnegie Mellon University
Zero Waste

You would be surprised by the amount of things you can add to the compost bin. All of your food, including meat/fish, as well as a number of paper products can be turned into compost. The paper cups that are by the coffee machine and much of what is used at events within the department are specially made to be composted.  Whenever possible, please always compost instead of using the general trash can. What you put in is composted into nutrient rich soil for gardens around campus and Pittsburgh. 

What can be composted?

  • Fruits & Vegetables
  • Flowers
  • Coffee Grounds & Filters
  • Tea in Paper Packaging
  • Baked Goods 
  • Pasta
  • Dairy Products
  • Eggs & Paper Egg Cartons
  • Fish/Lobster/Shrimp/Most Seafood
  • Meat/Bones
  • Cardboard with/without Wax Coating
  • Paper Napkins
  • Wax Paper
  • Sugar and Sweetner Packets
  • Wooden Coffee Stir Sticks

What CANNOT be composted?

  • Anything Plastic
  • Styrofoam
  • Parchment Paper
  • Condiment Packets
  • Metal
  • Shells like Oysters, Clams & Mussels
  • Paper used with commerical cleaners
  • Twist ties
  • Cloth
  • Rubber Bands
Note that some of these items CAN be recycled.