Perfect dry erase erasers for use with a wide-range of boards (large and small), including standard white boards, calendar, memo, marker boards, rolling, classroom calendars, easel, wipe off boards, weekly, lined, double-sided, classroom borders, student and personal. Our mini dry erasers erase writing from a variety of implements (dry erase markers, pens and paint). Compatible with most materials, including standard white/black, glass, dry erase sheets, whiteboard paint, poster board, wallpaper, stainless steel, etc. Our small dry erase erasers are an ideal fit for childrens' / students' hands but also easy to grip for adults (and go great with lapboards and mini whiteboards). Magnetic white board erasers are great for classroom, home and office use. These magnetic dry erasers / mini dry erasers are made from highly durable materials. Strong magnets are great for sticking to magnetic boards and any other magnetic surfaces, including refrigerators, metal desks and filing cabinets. For best results, wait 5 seconds (or until dry) before using the small square magnetic whiteboard eraser / magnetic dry erase eraser. For tough-to-remove markings, use magnetic whiteboard erasers / mini whiteboard erasers with dry eraser cleaner. To clean the erasers, simply use mild soap and water.