I watched the promotional video, and they did nothing that a garden hose with a good nozzle wouldn't do.
Will it actually clean an old wood deck or get ground in dirt off of old concrete? They claim it will remove oil stains from concrete as well, my 3000psi Honda pressure washer won't do that.
exactly.
..it kinda does it, but what the video won't show you and what you have to do to actually strip surfaces, or just clean embedded debris in asphalt of whatever, is that you need to focus that nozzle on your target spot for 4x the time, and closer, and just add to your job to even clean up the mess that you create just to clean up the established mess.
I bought my Greenworks 3k PSI unit on sale, essentially to clear wash my broke-ass crumbling asphalt driveway ahead of re-leveling, cleaning, sealing, and that 1/2 year later re-surfacing. ...lol, I bought all of the materials to do this, but the damn thing is barely more capable than my garden hose. Now, my driveway is basically the entry point to hell, the gaps that it has, but I've still noted about 5 minutes of time to adequately clear a 0.75" wide and 1" deep crevasse of the last 2 decades of roots and debris, that only extends maybe 2 feet. Honestly, that thing should be blasted out with a deliberate but quick run, and my 3k PSI washer just doesn't do it. ...OK, not under 20 minutes, and that is the point. Yes, it can do it, but if you have a big job, prepare to be defeated by nature before you are finished (the myriad trees that hang over my driveway and drop all manner of plant semen onto the surface that I have just cleaned...every goddamn minute)