antibacterial spray
bleach
cleaning cloths
washing up liquid
floor cleaner
dusters
etc?
They might not be yours, but someone uses these? Maybe the cleaner brings them?
I don't think that people who are flatsharing or whatever are not people. I just think that it's a super narrow slice of life. You might do it from 25-35 maybe and then get a partner and like, not do that any more.