An enteral feeding device and methods of using such device to unclog a feeding tube are described herein, wherein the device includes a first tube having a distal end and a proximal end. A series of order entry screens are downloaded to a remote customer’s computer, typically via an internet connection. The memory tables are organized in a hierarchical structure that corresponds to the input sequence. A stack of serial connected MOS devices is connected between the output voltage and a ground reference voltage. Suitable reactors can comprise an electromagnetic radiation source that projects through the reactor to drive the reaction at an electromagnetic radiation reaction zone.