The Kitchn recently posted about the great green compost carts that are now part of San Francisco's waste removal program. We've been reading up on what is and is not acceptable, and realized we still had some things to learn...Like, did you know pizza boxes can't be recycled in the blue bin? In fact any "food-soiled paper item" shouldn't be with the rest of your paper products, but rather in the green compost bin. Interesting! What's more, waxed cardboard, wooden crates, paper milk cartons, and even sawdust should go in your new green friend. We had no idea.