Oxy Solve House and Siding Pressure Washer Cleaner - Removes Stains from Mold & Mildew on Vinyl, Aluminum, Wood, Brick, Stucco - Concentrate 1 Gal.U.S. EPA Safer ChoiceCompact by Design (Amazon-developed Certification)

I haven't used anything that melts the green from the vinyl siding, and the 3100psi pressure washer seems to do all of the work, but this seemed to add some uniform cleanliness to the wall once dried. Hopefully it will give some residual anti-algae effectiveness. Ask me in a couple years.

Great cleaner for my pressure washer. I love being able to use it safely and know that it is not damaging my vinyl siding, or my plants around the outside of the house. It does a really good job, and I only had to use a little to get a lot of my house cleaned. A good value for the amount you get.

works well with power washer

Love this stuff. It has made cleaning my pool cage and papers so much easier. I found it worked better by using a scrub brush because with the solution on the pool cage. Took only minutes and the mold and dirt came right off. Wasn't coming off with just thr pressure washer. Would diffently recommend

Purchased this to clean the older vinyl siding on my home. Mixture in a sprayer per the directions and sprayed on the siding. Let it sit for 5 to 10 minutes and came back to spray it off. None of the dirt moved at all. I was trying to avoid having to scrub my siding but ended up having to scrub it anyways. Maybe it works great for someone with newer siding, but I was not impressed.

This product is incredible!! I had so much mildew/mold on my siding. We did a little scrubbing to help, but it cleaned it all away. When the bottle ran out, we couldn’t find any nearby so I had to buy a different brand. Now I’m going to have to redo the side of the house that used the other cleaner once I get another bottle of this stuff!

Worked well to wash off our house

I wish I had taken a before and after picture of our shed. We had purchased a 16x20 shed kit through a big box store and built it last year. Because we were also building a house, we were not able to put the siding on. The white siding sat almost a year outside...through a Wisconsin winter and spring. By the time we could side the shed, the siding was FILTHY. Like, mold and all kinds of weird grossness.The shed is only about 10'-15' from a designated wetland area, so I wanted something safe to use near it.To clean the vinyl siding, I did not use this product in a pressure washer. I used a spray nozzle with a dispenser, a bucket and a long-handled scrub brush. I pre-soaked the siding and then went to town with the scrub brush. It did a remarkably decent job. Better than I had expected, but I think it was a combination of the product and my elbow grease. Without mechanical agitation, I don't think this product would have worked as well, hence the 4 stars instead of 5.I would say if you need a decent cleaner near a sensitive environmental area, this would be it.