WC letters don't use them, they can infect you with bacteria.

If you have the expression to cover the toilet shell with toilet paper, it turns out to be a very bad habit because it creates the conditions for bacterium distribution, writes “Evoke”. If you are among those people who feel threatened by bacteria every time they go into a public toilet, and cover the shell with [...]
If you have the expression to cover the toilet shell with toilet paper, it turns out to be a very bad habit because it creates the conditions for bacterium distribution, writes “Evoke”.
If you're among people who feel threatened by bacteria every time they go into a public toilet, and you cover the shell with toilet paper, then you don't have it for you!
If you do, you will be exposed to a large number of battlers for how much you would do if you did not cover the shell in that form. Of course, as prefixes, the shell does not contain visible spots on it.
The reason for this is that the landing is done in such a way that it is not easy for bacteria to reach you, but toilet paper is a perfect area for their collection, writes warehouses, broadcast Periscope. /Periscopi












