Recipe: RE: unrefrigerated pickled eggs and unrefrigerated foods

They are not safe to make and keep at room temperatures, just like any foods. You can get botulism from them.

Bacteria in unrefrigerated foods have the bacteria multiply by double every 10 minutes approximately. After 2 hours at room temperature, not only the eggs, but any prepared foods need to be thrown out as they have enough bacteria to make you very ill. One man got serious botulism from leaving pickled eggs out and almost died. It is very serious. You cannot see, taste, or smell botulism. It can cause death or paralysis.

The eggs cannot be safely canned, either, they are meant to be made fresh, stored in the fridge and eaten.