You know I think one of my success's with bees not dieing from CCD is I haven't purchased any Bees for 4 years now.All my bees are Feral captured swarms the bees handle the queen renewal thing.I have purchased 4 queens is all.And being in the city I'm not around any commercial beekeeping operations.That and small cell and no treatments.I think not moveing the bees is also helpful.I do have trouble with ants though.
kirko