Cleaner is useless! She wants to use sandpaper to "grind bathroom floor tiles" to decontaminate. Net block: will be reimbursed

If you want to do more with less, cleaning skills are very important. The premise is to "use the right method"! A female netizen posted on PTT’s Gossiping board, saying that it was too hot a few days ago and she didn’t want to go out, so she cleaned it at home, but the bathroom floor tiles always had areas that "cannot be cleaned no matter how you brush them", even if they were strong detergents.https://www.call-sifu.com.tw/nservice5f560185d52d0.htm, It’s useless. I can’t help asking, "Can the dirt on the bathroom floor tiles be polished with sandpaper?"

The female netizen said in the article that when she was cleaning the bathroom, she found that the floor tiles always had areas that could not be cleaned by how to brush. It was useless to use strong detergents. She couldn't help but ask for help, "Can I use sandpaper to polish it? Wear the floor tiles? What size sandpaper is better?"

As soon as the post came out, some netizens discouraged, "The tiles are not good, they will scratch!" "The tiles are more likely to get dirty after being scratched!" "It's useless. Besides, there will be a lot of scratches on the tiles, which will accumulate more dirt in the fine slits. What we need to do is to judge the composition of the dirt first, and then use agents with different acid-base ratios to dissolve the dirt." "First dissolve the dirt. No, no sandpaper is needed at all. It can be wiped off with an old toothbrush with a little care." "Technology sponge is superfine sandpaper, so reimbursement is like a tile."

As for the medicament that dissolves dirt, some people suggest, "Vinegar and baking soda." "Concentrated hydrochloric acid, don't thank me." "Bleach and paper towel water for 3 hours." "Citric acid + baking soda." It’s enough. Different areas use different proportions.” “Bleaching water + kitchen napkins wet compress a day +1, which is the same as the new one. This is done for the New Year’s cleaning.” “3% hydrochloric acid is enough.”