Ya No Fun and PowderBlastCo is not interested in rectifing the damage done from their product even though they created the problem. Their comment to me was " We do so many of these we don't have the time to make sure all of them are clean of damaging material" What's that tell you? Quality control is "ZERO" and they don't care if their product has this material in it or whether it does damage. They're putting the responsibility of this on you the consumer for what they should be doing with their product before they send it out. Unfortunately the layman consumer doesn't understand their process and assume's the product is ready for installation like most products are. Add note there was no indication this cleaning process was needed as the product was delivered.