Electrolysed Water Floor Cleaners

Sounds like advertising hype.
If you electrolyse water you get Oxygen and Hydrogen.
Water, plus a wetting agent will probably do the job as well, and more cheaply. Possibly in a Flash!

I don't know about the floor cleaner that you mention but I use electrolysed water for cleaning and as a hand sanitiser and disinfectant. I am no scientist but apparently it is electrolysed water and salt solution and is 99.995% effective at killing bacteria, viruses, fungi and spores. Kind to your skin and environment as there are no harsh chemicals. It makes HOCL (Hypochlorous acid) .. I get it from a company in Dundee and I would put on a link but I am not sure if that is against the rules. It is now used in quite a few organisations and establishments around the area. Maybe someone with more scientific knowledge can give a better explanation.

If it is Hypochlorous Acid then it contains Bleach, Sodium Hypochlorite, not salt, Sodium Chloride.
Bleach will kill bacteria etc. (As advertised on TV )
But I would not describe it as "no harsh chemicals" (The bacteria would agree with me, even if no one else does ) Being an elctrolyte, it will be a corrosive solution.
But that is the difference between having a qualification (?) in advertising as opposed to Chemistry.

I am not a Daily Mail reader but found this on the internet.

www.dailymail.co.uk/news/article-8558121/Spray-costs-pennies-kills-viruses-instantly-simple-solution-Covid-nightmare.html

There are also several papers from scientific journals if you want to google it.- nothing to do with advertising