Beer Bottle Caps Burbank Recycle Center Drop-Off Only aluminum caps are allowed for drop off in the METALS drop off bin, NOT in your curbside cart. Normally small items are too difficult for recycling sorting equipment to capture but since these are metal the magnets will. Please no plastic caps or other small plastics! 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.