Apparatus including a receptacle (12) for holding therein organic waste (14), a first dispenser (22) operative to dispense an oxidizing agent (24) to the organic waste so as to cause an exothermic reaction that results in combustion of the organic waste, and a second dispenser (26) operative to dispense a reducing agent (28) that neutralizes a residual amount of the oxidizing agent that remains after the exothermic reaction.