Does fix a flat really work?

Yes, Fix-a-Flat can be effective for temporarily sealing small punctures in tires. It works by injecting a foam sealant that expands and fills the hole, allowing you to drive short distances to a repair shop. However, it's important to note that it is not a permanent solution and may not work for larger punctures or sidewall damage. Always follow up with a professional tire repair as soon as possible.