Good morning Joni and thanks for your participation on the DOW.
In years past I have used many different materials for fuel. Thousands of miles on switch grass cubes , broiler litter ( chicken shit and wood shavings ) and many other fuels .
I have traveled all over the USA with my partner Dr. David Bransby
.Library / Bransby Bio | Drive On Wood!
At many of the events I was being asked of all the fuels that might be used . To get the point over I have said that a dead cat would take me about five miles 
Below are one of the test we did with the gasifier . Keep in mind this was over ten years back and improvements have been made .
http://www.driveonwood.com/library/auburn-test/
Thanks Wayne