Review on Tuff Duck Granite, Grout, and Marble Sealer 22 oz: Ultimate Stone Tile Protection by Matt Reid

Moving into a new house, the inspector advised us to buy sealer and apply it to all tiled walls and floors in the shower (large grout lines). According to reviews, we order duck. Clear liquid. We bought a couple of 2" foam brushes to apply to the grout (buy a couple if the foam cracks). We used a small jar to hold the sealant. Continues with slight discoloration but dries without discoloration. Surrounding tiles take on a slight veil, but are easily rubbed off. I hope this works to keep the solution clean and protected from water. Investing in a new grout is worth it!