So what's the problem with the precoated frames?  Why would there be any more impurities in this wax than in foundation?  They are far easier to use than trying
to coat your own.  I think that the big advantage of using Pierco frames is the ease of use.  One doesn't have to do anything except put them in the supers or hive
bodies.  I never have had any trouble with the bees drawing out the comb unless there is no honey flow on.  I always start out the new coated frames ten to a box,
then the next year mix them with my other drawn comb nine to a brood chamber or eight to a super.  Works like a charm!

Ted Fischer
Dexter, Michigan USA