You will find it easiest to take it off the fridge and place it on a flat surface like your kitchen table/counter. Use both a wet cloth/paper towel and a dry one to properly clean the board. If marker ink remains on the boards for longer than about 40 days, you may find it too dry for a quick wipe. In this case, the best option is to wipe it off with some spray deodorant or alcohol, dry with a paper towel and the ink will come off immediately.