Cleaning off a shadowy and messy chalk wall can be near impossible. With this simple trick your chalk wall will look good as new in a matter of minutes. You will need: Paper towel or microfiber cloth Coca-Cola or any other soda To begin pour off a small amount of the soda into a bowl. Dip your cloth or towel into the bowl and begin to wipe the chalk wall. I always do a cleaning coat using only...