Beer Bottle Caps Recycle Curbside Special Instructions Due to the size and weight of these, try putting them in an empty and clean tin can and then pinch the end close before placing in your curbside cart. This will help to ensure they make it through the sorting process. Use Food Cans Bottle caps are recyclable, but they often get lost during the recycling process because of their small size. Put your bottle caps in a steel food can, and when it’s nearly full, crimp it closed and recycle the can and its contents together.