The panels can be cleaned using any typical household, non-abrasive cleaning agent. Normally, you only need a damp cloth to clean the panels thoroughly. Do not use abrasive substances or cleaning products based on chloride. We do not recommend using solvents. Adhesive residue or pen marks are best removed using isopropyl alcohol. Cleaning products that have been tested with Palisade tiles and have proven to be effective and non-damaging are: Scrubbing Bubbles, Tilex, Kaboom, CLR, Iron Out and Goo Gone.