This is a cut and paste on routine acrylic cleaning from another aviation technical source:

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THE DON'TS WHILE CLEANING AIRCRAFT ACRYLIC

Never use a circular motion when rubbing the window surface. Remaining dirt will cause random, round scratches, dramatically reducing vision and optical clarity when flying into the sun. Vertical patterns are less noticeable than horizontal.

Never wipe plastic that's dry. Dust and foreign particles will scratch the surface. Worse, wiping "dry acrylic" builds up a tremendous static charge, attracting even more dust and dirt.

Never employ a used cloth. Only fresh clean cotton should ever be used. Anything less will only have left1over dirt, debris and dust from previous usage.

Never use paper towels or cloth containing nylon or synthetic fibers, all of which are abrasive. Use only 100 percent cotton when cleaning or restoring acrylic.

Never use a cover on acrylic. Even 100 percent cotton can ruin a windshield after the wind chaffs it from the dirt that gets blown under the cover.

Never use any of the following to clean acrylic: gasoline, benzine, alcohol, acetone, carbon tetrachloride, lacquer thinner or glass cleaner. Each will damage the plastic in one form or another. You can't go wrong using water alone.

Never use a wax or filler unless it's specifically designed for acrylic applications. Petroleum-based waxes, for example, will attack acrylic.