Most humans are social critters.
They’re going to gather...
If they can’t gather in commercially cleaned, frequently sanitized bars and restaurants they will gather in private homes where cleansliness is a crap shoot.
Solitary confinement would be the only option to truly “stop the spread”.
"private homes where cleanliness is a crap shoot."
"Umm, no thanks, I'll just go to McDonalds...."