Ok, so here's how they will act soon :)
So, I'll adjust units so they will not take jobs requiring them to wait for something.
Also, units will get temporary statuses affecting their stats. So, units will be able to hold IT in for longer, but they will get debufs to walking speed & device operation speed, then if they'll still not be able to relieve themselves, instead of dying, they will leave THE PACKAGE (wherever they'd be standing if inside, or filling in their suit if outside), getting massive debuff for himself (shame on you, Unit) and moderate debuff for anyone passing by what's left, untill it's cleared.
All of those debuffs will wear of with time.