I have not tried but I use chips and pellets in the smoke tube.
I am thinking depending on the size of the chips they would go through the auger. Maybe something I need to try. I wonder if a few pulses in an old food processor would help make them smaller and easier to auger in, just speaking on the different chips I have here currently. when I bought a new food processor I gave my old one to one of the local GoodWill type stores. Maybe I need to go look for a used one to try it out, the little GMG would make a good test cooker probably.