When you clean your Frame Box, it is important that you only use a dry or lightly steamed cloth. Do not use soap or too much water. Do not place the Frame Box or Frame Tray where the temperature changes between high and low, or where they are exposed to extreme humidity. Wood veneer is a living material and can therefore react when exposed to direct heat and moisture. Do not place your Frame Box next to your air conditioner or heater as this may cause the veneer to crack.