Does steam cleaning in the kitchen sink kill all the germs?

Doubt it. use lysol or bleach afterwards.

I would imagine this would do the trick, but would still use some kind of household cleaner afterwards. I regularly pour bowling water around my sink, for the very same reason.

probably not. It might kill some, but if there is anything that can survive in temperatures greater than your steam cleaner generates, it would obviously live. Also, the sink has the little crevice where the drain goes that could hide some germs from the steam and even little micro scratches in the sink surface from cutting and cleaning pads might harbor some germs.

It would probably be safer to wipe the sink down with a liberal amount of vinegar if you want to avoid chemicals.

In a word no…
By the time the steam leaves the machine its already started to cool down so it doesnt stay hot enough long enough. For example you boil water to kill germs but you dont just bring it to a boil, you boil it for 20 mins.

Probably you do more sanitizing with soap or other high pH solution.

yeah, i think so.

no, but bleach does

no
it would only kill those that are suceptible to the heat, and the water/steam won’t be over 212 F by definition.
in addition germs that are vulnerable to steam, would need to be steamed for several minutes to ensure complete destruction.
bleach or other chemical cleaners would kill a much higher percentage.

yes, but the down side is that the warm water left behind after cleaning can be a whole new breading ground so a follow up with a chemical disinfectant can’t hurt.