Fuel charge for melting plate candle assembly and method of supplying liquefied fuel to a wick

A fuel charge for a melting plate candle assembly, the fuel charge comprising:

• a first portion of the fuel charge including a first volatile active and a second portion of the fuel charge including a second volatile active;
• a solid outer shell of candle wax, the outer shell forming an inner peripheral wall defining an opening extending completely through the fuel charge, whereby a wick may extend completely through the fuel element through the opening;
• and
• an inner core encompassed within the outer shell, the inner core comprising a second fuel material in a second form different than the outer shell, wherein the second fuel material includes a plurality of discrete fuel particles composed of candle wax and a plurality of interstitial spaces dispersed between the fuel particles.