Article: Using your own breath or a hair dryer, blow the dust and dirt off the plexiglass. If using a hair dryer, be sure it is set to its coolest setting. Hot air will damage the plexiglass. Position the hair dryer at a 45 degree angle several inches away from the plexiglass, running the air side-to-side down the surface.  Take the time to thoroughly remove the dust by air before moving on, and keep blowing if you see or feel any large particles on the plexiglass. Avoid using a microfiber cloth, because although microfiber is non abrasive, scrubbing dirt or dust with the cloth before blowing larger particles off will still scratch the glass. Mix 1 teaspoon (5 millimeters) of soap into 1 US-quart (950 ml) (0.95 liters) of water. Angle the plexiglass at 45 degrees and gently pour the solution over the plexiglass. Be sure to do this in a sink or someplace that will not be damaged by running water.  You can also pour the solution into a spray bottle, and gently spray the plexiglass. Keep the plexiglass at a 45 degree angle and allow the mixture to run down the plexiglass slowly. Gently running this mixture over the plexiglass will remove the smaller particles of dust and dirt, preparing the glass for wiping. Products like Windex, which contain alcohol, will significantly damage plexiglass. Also avoid solvents such as acetone, dry-cleaning fluid, or any gritty cleanser or polish, as they will damage the surface of the plexiglass. Although it is best to use a soap and water mixture, there are some products you can buy that are meant specifically for plexiglass, like Brillianize or Novus.
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Blow dust and dirt off the plexiglass. Wet the plexiglass with a solution made from water and dish soap. Avoid using products with alcohol, ammonia, or aromatics.