Corks Alternative ways to recycle Compost (Yard Trimmings) Cart Natural corks go in your compost cart, but not the recycling cart. Use ReCORK or Cork ReHarvest (see below) to recycle corks separately. Plastic corks need to go in your trash cart. They are made from a non-recyclable combination of materials, and they are too small to be recovered in the recycling. Metal screwcaps go in the recycling cart, but make sure to remove the screwcap from the bottle so they can be sorted correctly. (Do the same with the metal lids on glass jars.) Plastic Corks: Too Small to Recycle Many synthetic corks are made out of plastic #7, but unfortunately are too small to be recovered by sorting equipment, so they go in the trash. Composting Natural Corks You can compost natural corks, but they will take a long time to break down unless you break them up into small pieces first, or even better, run them through a blender. Alternative Ways to Recycle CFCA Dropboxes The Cork Forest Conservation Alliance collects and recycles natural corks in dropboxes in many Whole Foods stores, as well as other retailers. Find a dropbox here. ReCORK Recycling Program ReCORK collects natural corks so they can be reused in packaging and products such as cork shoes. If you have 15lbs of cork or more, mail them in with a free shipping label. Or find a nearby dropbox. Ways to Reuse Hydrate Your Plants Break up a wine cork and add the pieces to the soil of your potted plants to reduce the rate of water evaporation during hot summer days.