So why do they always supply egg trays then?
Public opinion, people ant to keep eggs in the fridge so they are supplied, there is no reason for it.
Add peanut butter to that list.
you what people do that

All fine apart from the mayo, it'll be fine (even if opened) out of the fridge but once you start dipping spoons, knives etc in and dropping crumbs of perishable food in it, it soon goes off.
Nope it's fine.