It is very important with UV acrylic that you use either water or Evonik Acrifix AC 1010 anti-static cleaner. Vinegar or home style glass cleaner will stain the surface.
Always dust off your print before you use water or the Acrifix AC 1010. This is a normal operating procedure even if cleaning glass. Sometimes grains of sand or specs of some hard dust may be on your print so giving it a simple dusting before cleaning is always a good idea.