Small Tools, Make Life Better! Yes, you must find that the sink in your home keep clogging up for no reason again, and you even didn't know why. If so, try our sink cleaning brush! This brush is small enough to get into out shower drain holes. It really helps loosen up the hair and mildew in your shower drain. You can use this brush every couple of weeks in bathroom sink drain. It brings up disgusting hair etc.and keeps the drain free and clear. How to clean this brush? Many people think it is very hard to clean it after using, so they throw the brush away. What a pity! One buyer gives a very good suggestion, “I just rub my thumb along the bristles under running water for a minute or so and it looks plenty clean enough to me”.