George B
¯\_(ツ)_/¯
I end up using my wash glove and dish soap.I actually took it thru the car wash down the street twice, that didn't work too much so I got a nylon brush kitchen scrubber and a bucket, poured some bug cleaner window washer fluid in the bucket and added a few cups of water, dipped the scrubber in the bucket and scrubbed them off