What is the warranty, and how long do the flagstone pavers last outside in the sun over a dirt area?

Our Flagstone Rubber Pavers don't have a manufacturer's warranty for them. These rubber pavers will last for as long as you own the tiles. You will just need to make sure to take care of the tiles with regular maintenance. A quick hose down and sweeping of any large debris is all that is necessary. The only thing you will notice when installed in direct sunlight is that the tiles will fade.