My predition is that they'll all shit ins such a way that they'll be stuck in a "constant unease" situation until the owner comes back.
Komarisa cornering herself because she pooped infront of her and lacks the hop strenght to jump over it and the fear of "touching it" making her unable to try anything else, and the koreimus filling up their pet clothes and being unable to take them out.
So when the guys gets back he'll found 3 shitbags being full of shit and stressing themselves out of shitting without thinking.