It was "in jest" that I asked "
What is "creosote"? 
" . I'm fairly familiar with creosote, I've had and been around a few wood stoves, and even seen flue fires that roared, but they were wood stoves or fireplaces, where active flames are licking upwards at any accumulated creosote in a flue. The only thing I've found in my pellet stove's flue is a black ash, maybe even some minute traces of sticky black ash in the cleanout's upside down cap, but I don't see a flame path from flame to the flue up out of a fire box, down the back side past the heat exchanger tubes and out through a near floor level mounted combustion blower's blades.
I've never left home with a fire going in a wood stove or fire place, nor would I now. I've never shut my pellet stove down to go to work or anywhere else ... unless I was anticipating it maybe running out of pellets before I returned as that leads to smoky smell and wear on the auger.