To clean the soleplate, take baking soda and water or vinegar. Then form a mixture that has a slightly thick consistency. Apply the mixture to the soleplate using a wooden spatula. The baking soda will dislodge the sticky residue. Then it will make the surface of the soleplate smooth and clean. Now, wipe it off using any clean fabric. Next, fill the tank with water and turn the temperature to the highest. Then push the spray button. The mixture's remaining part will be removed with the help of this process.