Do air duster cans expire

Yes, air duster cans can expire, although they don't have a strict expiration date like food products. The effectiveness of the propellant can diminish over time, and the can may become less reliable. It's always best to check the manufacturer's guidelines on the can for any specific expiration or shelf life recommendations. Additionally, if the can is damaged or rusted, it should be discarded regardless of the expiration date.