Plastic containers are recyclable, right? Kind of right, kind of wrong. You’re likely to recognize the triangle made of arrows representing recyclable materials, but plastics also have a number from one to seven. Each plastic recycling number is code for the specific plastic that your containers are made of. Most Tupperware is imprinted with the number five, representing polypropylene, generally a food safe plastic.

Unfortunately, most hard plastics coded in the “five” category are not usually accepted through curbside recycling, but you can recycle your Tupperware this way.

If you have plastic storage containers that are non-recyclable, there are still plenty of solutions. Here’s some inspiration to give your reusable plastic containers a second life.

Do Your Research on Symbols
Bottom line—if you aren’t sure about the symbols on your Tupperware, look them up. It’s best to head over to the manufacturer’s website if you’re unsure about something. Every brand follows its own guidelines, so getting into the habit of checking symbols should help answer any questions about the plastic containers in your kitchen!