So intelligent talking people-rats can run a five-star restaurant but can’t understand the concept of hygiene? Why? Because “Rats are unsanitary”, apparently. Sounds pretty bigoted. Sounds like you found a big-worded sciency way of calling them icky. You’re a scientific ratcist.
If they have to live in the walls and don’t have sanitary living conditions that’s a societal issue, also due to deeply entrenched anti-rodent bigotry.
I can’t wait for Ben Shapiro to clip this and use it as evidence of the crazy woke left.