Travertine tile is a porous stone that can become stained and damaged over time. To keep it looking its best, follow these tips: 1. Keep the tile clean. Wipe down the surface with a damp cloth every day to remove dust and dirt. 2. Use a sealant. Apply a sealant to the porous areas of the tile and let it dry for 20 minutes. This will help prevent dirt and stains from sticking to the surface.