Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
No need for the car wash mix in that. Bleach and water. Light scrubbing with brush leave on for a few minutes hose off good as new. Just did mine 2 weeks ago.
Bleach and car wash mix, I use it all the time, I spray it on with the power washer under low pressure nozzle, let it sit for an hour and then rinse, for those hard to get stains I use the high pressure nozzle.
I think it will work, worth a try.