Car seats expire, usually between 6 and ten years. Make sure you know the expiration date on the one you buy. The label on the plastic shell gives you the make, model, manufacture, and manufacture information. To ensure that your car seat lasts, take care of it by making sure it is installed and used properly every single time you’re driving your child. Follow the cleaning instructions on the car seat. If you’re not using it, you can store it in a cool, dry place. Don’t use bleach or harsh chemicals on it when cleaning. Only put it in the washing machine and dryer if the instructions say it’s OK to do so. Wipe down the plastic parts with a gentle cleanser and a dry rag.