It depends on a lot of things. You could just as easily wash off the wax that was applied to the orange and make it spoil faster that way, and the extra moistur

It depends on a lot of things. You could just as easily wash off the wax that was applied to the orange and make it spoil faster that way, and the extra moisture will cause delicate fruits (like berries) to spoil more quickly than any gains you'll get from the removal of dirt and larvae if you don't dry them very thoroughly.