I tried the Bio-Advanced 2-in-1 Moss & Algae Killer & Cleaner on the front half of my Cape Cod style house (I live in Southern Maryland). I killed all the algae, turning it all yellow. However, to get up to the top of the roof (which is really needed on the back of the roof), I needed a jet spray attachment ... and that is where Bio-Advanced said NO. Their position is that you must use it with the hose end sprayer it comes with. Now, I respect that, but it's too dangerous for me to get up on the pitched roof (I'm approaching 70 !!).
So, I decided to do some experimentation. I cut open the original containers to get the sprayer off, and save the chemical.
You need to cut up high as the container is very full with chemical. To the right of the Moss Killer is my test tube. I measured out 25 ml (you can use anything really ... a shot glass even !!) and connected the sprayer up. It took 10.01 seconds to empty the 25 ml.
So then, I repeated the experiment with my Ortho Sprayer.
Of course, I had the sprayer off the original Ortho base ... and dipped the hose into the solution (same 25 ml) and timed it. Found that the 4 ounce setting got the same time ... 10.03 seconds.
So I sprayed the roof, and as assumed, it took about the same amount of time as when I did the front part.
The algae on the front and back died, so then I had a "roof cleaner" come out and sweep off the roof and spray their own chemical ... it wasn't needed, but that was the agreement.
Anyway, I then decided to spray my driveway where I needed to walk it without a hose available (it's 600 feet long), so I used the same Bio-Advanced Moss & Algae Killer & Cleaner, sprayed it into a large container then poured the resulting chemical into a hand pump sprayer and walked my entire driveway killing algae ... worked like a charm.
So, I decided to do some experimentation. I cut open the original containers to get the sprayer off, and save the chemical.
So then, I repeated the experiment with my Ortho Sprayer.
So I sprayed the roof, and as assumed, it took about the same amount of time as when I did the front part.
The algae on the front and back died, so then I had a "roof cleaner" come out and sweep off the roof and spray their own chemical ... it wasn't needed, but that was the agreement.
Anyway, I then decided to spray my driveway where I needed to walk it without a hose available (it's 600 feet long), so I used the same Bio-Advanced Moss & Algae Killer & Cleaner, sprayed it into a large container then poured the resulting chemical into a hand pump sprayer and walked my entire driveway killing algae ... worked like a charm.
