Be Careful! The safest way to clean a plasma screen without the risk of damaging it is to use nothing to clean it, as in no cleaning solution whatsoever. Just wipe the screen gently with the cloth, using the same side to side method you would for an LCD TV. Use as little pressure as possible. If this doesn’t work, get the cloth slightly damp with lukewarm distilled water and try wiping it again. If the screen still isn’t clean, you can try a plasma screen cleaning kit.