Subject: How to Keep Away from Ant

Hi,

Recently, I planted plenty of seeds in the soil of my backyard.  They,
unfortunately, are eaten or moved away by obnoxious ants, I really
don't know.  Is there anyone could tell me how to keep the seeds
not to be eaten or moved away from ants?  Is it feasible to spray some
limewater on the surface of soil?

Tks. 
Matthew