There are many types of plastics. Most plastic recycle centers accept plastics #1 and #2. Some accept plastics #3 and #6, but not all. Almost no recycling centers accept plastic #7. Call the nearest recycling center to you to see what plastics they accept.
Go to the nearest plastic recycling center to you.
Profit! Check the labels on your plastic! If they say California Redemption Value or California Cash Refund (or something similar), then they can be turned in for money!