The most important thing to remember when you use bathroom slippers: Don't forget to take them off when you finish using the restroom. it is sometimes very difficult to remember, because you were wearing room slippers before you went in. The faux pas is going to get caught pretty quickly - the bathroom slippers are usually made of a hard plastic. It's pretty embarrassing. One thing I frequently do so I don't make the mistake: I don't use them. It is easier to remember to use the room slippers if you go into the toilet barefoot or in socks.