More on Neat as Wax from Infoplease:

• Neat as Wax - Neat as Wax Certainly the waxen cells of bees are the perfection of neatness and good order. ...
• Similes - Similes in common use: BALD as a coot. BITTER as gall,soot. BLACK as ink, as a coal, as a crow ...
• Dictionary of Phrase and Fable: N - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "N"