Acrylic Blocks can be gently dusted using a non-abrasive cloth. If your product has any dirt or streaks, use a small amount of mild soap with water and rub gently with the cloth. Follow that up with a clean, damp cloth, and dry with a soft cloth.
Please do not use any products containing ammonia or alcohol, as those will damage your acrylic. Take care to not get the back of your Acrylic Block wet.
To order an Acrylic Block, click here - https://www.proprints.com/acrylic-blocks.