Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: How well does it work on shower tile and grout?
Document: Item was recommended by friend in the pool service industry. My waterline tile was just cleaned using a power sand blasting to remove calcium build-up. Although the tile is 6 inches wide only the center 2 inches where the calcium built up needed extra work. The result was the center had a rough texture due to the power cleaning. The gentleman that did the cleaning applied a 50/50 mix of Thompson's water seal and Murphy's soap which gave an immediate gloss , but wore off a few weeks later.
It cleans nicely enough. Not too sure just how protected the glass is. I still get water spots. I have full glass shower doors and wanted this to protect from hard water stains. I cannot say this product does that. I have used it twice and it does clean well enough, though.
Work Perfectly
I compared this to Vindico-N (which is very highly rated) and this product was super easy to apply and is more hydrophobic than Vindico. It doesn't last nearly as long as Vindico (which is virtually lifetime for shower glass), but it very cheap, easy to get, and works well.It applies just like a car wax... spray on spread around, let dry.
I was very skeptical about this product, but went ahead and tred it o my new clear glass shower door. i was amazed by the result, the water just was running down on the glass with leaving tiny drops that dried right away. Really like this product. I also applied it on the granite countertops around the faucets, will see how that will work, hope to see less water spots around.
to do approximately 46 sq. ft of tile..  A few weeks later scum was adhering to the rough center surface and the smooth sections easily washed off with a rub of you hand. The description covers ceramics so my tile would fall into the category. I was actually looking for something to seal the pores again as in the product description. I may have been the first to try this product on a pool's ceramic tile as all the 14 previous reviewers used it on glass.
Really does the job put it on my glass shower doors now soap scum does not stick any more and its easy to clean.
Ok. Don't spent a bundle for shower door treatments from the company. This product works effectively. I suggest.monthly treatments to keep up the effectiveness
Can't beat it for my Century Glass Shower Enclosure! Century has a more expensive product so this CRL TPL glass cleaner and coater was perfect for my needs.
I treated my new shower door with this a few months ago, and so far the door is looking good with not water marks. Product arrived the day after ordering. Thank you.
Answer: yes