I do not like to swear. But one thing that takes me to the brink is trying to scrape out filthy, dirty grout.
You may have nice tile work, but if your grout is moldy-who cares? Shower floors are the worst, it seems!
We have a cure that we encourage: do not spare any extra expense at installation for epoxy grout. Not all epoxies are the same, for sure. We like to use Laticrete Spectra Loc grout for our nice tile work. https://laticrete.com This grout is superior to traditional grout for cleaning, yet does not need sealing. It will cost about 3 times more than traditional grout and is harder to install; however, this seems but a small price to pay for tile which will need less cleaning-not to mention it will cut down on feelings of frustration and the desire to curse!