glass cleaner does work. I have been using "Spray Power" by Crown. Buy a gallon for $6.50 at Menards . It works awsume. It also removes all the bugs from the front of the HTT without having to scrub and all the awning mildow/crude. I assume Spray Power removes the wax. But I do not care, as I only wax with the liquid car wash with wax in it. I am tooooooo lazy to wax the trailer old school.