Should your Dazzler FX unit become backed up with spark powder, simply remove the rubber cap on the side of your unit and use a flat-head screwdriver to gently turn the screw until you feel it unclog.
To avoid future backups, the hopper must be emptied after each use. Use the Clearing function (IR Remote option (6), DMX Ch2; set at 150-255) to expel unspent powder after each use.
Ensure that you are using genuine ColorKey Dazzler FX Cold Spark Powder.