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I would think and good car parts place, it is a specific cleaner for lexan, (polycarbonate resin) but works on plexi and other clear plasctics.
Lexan is is a GE trademarked name, kinda like kleenex is to the tissue world.
If you wanted to get real serious about it,Novus makes a good product, there is #1 cleaner removes dirt and leaves a glaze that cuts staic and repels dust. #2 polish removes fine scratches and haze. #3 scratch remover is for deeper scratches; then follow up with the #1 cleaner for the final touch.