I needed to seal the grout in my shower on the walls and floor. I liked the idea of sealing my grout with a spray bottle for ease of use. Unfortunately, the sprayer only lasted for about a quarter of the bottle. I was able to move it into a different container. It had a very slight pleasant smell and was so easy to use. After waiting the 15 minutes, I just wiped the tiles, and everything had a beautiful shine. I'm not sure how long the sealer will last on the grout but so far, I'm very happy. This was a much easier application than past sealers I have worked with.