I don't think the mouse/mice were inside the dehydrator while it had food in. It always had the cover shut. ( Yes I know mice are clever at getting through gaps ) They had an easy snack of bits of food outside and around the dryer and that's where most of the poo was. The dryer door was only left off after last time I emptied it and that's when i expect they pood inside.
I WOULD have noticed the mouse poo if it had been there last time i used the Dryer, so I've decided no food gets discarded.
Call me a dirty ****er if you wish, but my 'risk assessment' is that there's very little chance that food was contaminated and even if it was, it will get cooked enough to be safe.
I'll be bleaching the dryer to hell and back.
If I get ill, I'll post a follow up confession, but that might be after the apocalypse anyway.