We're considering installing a pressurization system to keep the tanks at constant pressure solely to deter them.
https://xkcd.com/2974/
Storage Tanks

xkcd
@xkcd I'm missing the joke... Something about calculus of storage tanks?
@sldrant @xkcd This is a common calculus problem - I believe the question would give the flow rate of the water and ask for the rate of change of the water level in the tank
@ThawnyRose @xkcd ah, yes. Vaguely remember doing something like that 20 odd years ago...