CARING FOR PLEXIGLASS
The most common problem with caring for acrylic is the use of incorrect cleaning solutions and wiping material on your plexiglass. To get the maximum life out of your plexiglass, never, ever use cleaning solution that contains ammonia to clean your plastic. Cleaners such as Windex or 409 will do more harm than good. Use only products specifically recommended for cleaning acrylic such as Novus #1 or Brillianize. Warm soapy water is also good.
Never use a dry cloth, paper towel or your hand to clean your acrylic. Doing this rubs the dirt and dust into the material as much as it rubs it off. First, blow the dust or dirt off with air, or use water and a soft cloth to float the dirt off. Then use a recommended cleaner to complete the job. Note: a mild solution of dish detergent and warm water takes off stubborn dirt easily without harming the acrylic and works as an excellent alternative.