[vintageogauge]

Originally Posted by DAVES

Re: wet and forget
I've heard about the product actually the name. Thanks to your post, I looked for reviews on the internet, cost etc. To be frank everything I found seems to be company posted advertising.

You say,"hook to the hose and spray." Am I wrong? It looks like you buy a gallon of concentrate at like $27.00. You dilute that 2 to 1 with water so you now have three gallons. You then apply it with a pump garden sprayer. Then you allow rain to wash it off. Seems to do the roof you need to climb on the roof. To do my drive, three car drive
would require at a minimum two gallons of the concentrate and more than one. application.

I have used muriatic acid in the past on the drive. It works well. Not the safest stuff to mess with.
and a lot of work

That stuff is highly toxic. I order 4 gallons, read the warnings and gave it away.