StonePro Porous Pro Sealer - 1 Quart (32 Fl Oz) - Premium Natural Stone Sealer for Travertine, Limestone, Marble & Porous Surfaces - Ideal for Countertops, Floors, Backsplashes & Outdoor Stone Protection

My travertine floors had not been sealed for 8 years (I didn't know I needed to seal them) and I noticed that they were staining in a few areas and areas were darkening. I researched what to buy (I actually bought a sealer from amazon that said was for travertine but when I got it, it wasn't and they would not let me return it) and I ended up buying stone pro. It wasn't hard to apply, works well, water repels and I noticed that my floors clean a lot easier and don't stain like they were. It does not change the look or color at all but feels smoother. Very pleased and when the time comes for them to be sealed again, I will buy it again. One more note, I cleaned them very well before applying, making sure to remove the few stains on the floor (I had only one small stain in the grout that wouldn't come out) before sealing. If you don't sealer will keep the stain forever.