Yes, acetone is pretty agressive with most plastics. It will often take the markings off because it dissolves the plastic.
The stuff we have left is tricloretheylene (sp?) which is much less agressive and it's nice to know that you can spray it on most paint and plastics without damage yet it will remove the markings.
Too bad all the good stuff is banned now. When we are out of this we'll see how well the replacement works.
-Hal
