Most bacteria are harmless or beneficial so what's the point of killing such a high percentage of them?
I'm very careful about food hygiene and we have no problems associated with lack of careful food hygiene. I manage this with hot water and washing-up liquid or soap and an occasional slosh of bleach on a white chopping board, not to kill germs, but to remove carrot juice stains.
Likewise with other areas of the house that need to be hygienic. NB hygienic does not mean almost sterile.
Encouraging people to kill 99.9% of bacteria and viruses is not a good thing to do in my opinion. I'd go further and say I think it's actually a bad idea and you shouldn't be pushing it.
SNP and Greens end coalition deal
What is a reasonable minimum spend for an online grocery delivery??