Your sugar bowl work sounds good. I'd start by taking an Influence bath, rinsing the sugar bowl with the bathwater, and letting it air-dry; then doing your work.
Say, is there a break room, or at least a coffee pot with fixin's, for all the tenants to use? Put the sugar bowl in there!
If there are communal cleaning supplies, spike those, too, with the Influence bathwater or Influence powder, as appropriate. It only takes a few drops.
Also, don't forget spraying Peace Water in the bathrooms -- and the bathwater can be mixed with that, too. As a matter of fact, now that I think of it, include Peace Water in your Influence Bath!
Best of luck,
Miss Michaele