Related but off-topic question:

Does anyone know how long coronavirus is known to last (even rough estimates) on dry/wet surfaces at cold/room temperatures?

The practical consideration here is, if I buy something from (say) a supermarket, and (say) someone infected had sneezed on it that day, how long and in what manner would it be helpful for me to leave it outside/in the fridge/etc. to help prevent transmission of the virus? For refrigerated or frozen goods, how much should I expect this duration to be affected?