One olive branch I was thinking I could hold out to management was offering to submit to inspections of their hygiene and welfare, with reasonable notice so I can plan for my dog to be contained. The office ladies themselves are nice people, I haven't got a problem with them popping in occasionally to look at my guinea pigs if they want. Maybe they'll learn something.
I feel like they're picturing pigs running wild through the apartment and ruining their carpet. So it'd be healthy for them to see that they mostly just sit neatly in cages. Being cute, quiet, clean, etc.
The only time my original four girls ever got actually dirty would be when I was suddenly hospitalized for several days and everyone else was also busy taking care of me in rotating shifts. I gave them a deep clean as soon as I recovered and they were no worse for wear. Man I felt guilty though.
Outside an extreme circumstance like that, they'll always be reasonably hygienic, come by anytime to observe the hygiene, office ladies.
(I've instructed my family that should that ever happen again, they should go to the pet store and buy a ton of disposable paper bedding for until I get back, because yikes. You live and learn.)