Use a plastic cleaner or mild detergent and water.
DO NOT use IPA (Isopropyl alcohol) or harsh chemicals to clean acrylic. These may cause cracking or crazing. Hydrogen Peroxide or Bleach can be used safely with Acrylic.
Use a plastic cleaner or mild detergent and water with a soft cloth.
IPA, Hydrogen Peroxide, Bleach, and Acetic Acid up to 10% can all be safely used with PETG.