I've been unhappy with the Picnic charwood for some time now. Too much dust, too high of a percentage of small lump, burning too cool, etc.
I heard somewhere that the Kingsford Charwood (natural hardwood lump) had improved, including eliminating the sparking that was so bothersome.
I tried the improved Kingsford and am very pleased with the results. Plus, the cost is lower.
I am switching to Kingsford Charwood.