Blyth, Inc. said second quarter sales fell 32% to $211.7 million primarily due to lower sales at ViSalus and, to a lesser extent, at PartyLite, while Miles Kimball reported a sales improvement.  Blyth's operating profit for the second quarter was $1.2 million this year versus $17.8 million last year, largely driven by the decline in sales.   Sales of candles & home decor, consisting of PartyLite, fell 12% to $77.8 million.  This decline reflects the lower levels of sales consultants ...