Some people like to add dish soap but I find that it’s too sudsy and I feel like I have to clean up AFTER cleaning up. When I want a little more clean I will wet and rub on a bar of LAVA soap. Just a little bit and it cleans amazingly well. So much more durable! So much thicker! Often I end up cutting them in half and they still last so long! If I want a little extra clean I What them and rub them on a regular bar of white soap. These Melemine eracers are SO MUCH BETTER than any other that I’ve tried.