Not unless you particularly like them. It's easy enough to run your fingers through the sand to aerate it once in a while. With snails, the time will ususlly come where you are trying to figure out how to get rid of the excess.
LOL! I just had a look in my cherry shrimp tank and there was a MTS probally from moss i brought, so i put it in the tank with sand and it has already burried its self.
What were the chances of that!