Ryko Plastic cover cleaning

[tw101212]

Hello! I have a Ryko thats 2-3 years old. I have not cleaned the covers correctly and it shows.

How do I get the covers back to like new condition? I have been told wall banger and a pressure washer? Is this the best technique?

Are there resurfacing options?

 

[Car_Wash_Guy]

I used Klean Wall with mine and it was like new

 

[soapy]

I use a 50/50mix of water and low fume Muratic acid. brush it on the plastic and let it sit for a minute or two. Then scrub with a soft brush. and rinse with water.