pH probe life expectancy

I know ORP probes do not have a long life expectancy but what about in line pH probes?
pH probes must be stored in protective solution (usually KCl) if you are closing your pool. If you let them dry you won’t be able to use them again. The probe that I neglected hasn’t made it to the second season. The new one I keep in protective solution in winter is on its third year without problems.