Residential...but then that is 90+ of my total market. If I look at percent of time spent doing air excavation on on commercial vs total amount of time on commercial properties it is probably close to (maybe even a little higher than) percent of time spent doing air excavation on residential. So I guess I have found even demand.
Where people want healthy trees, there is a place for the tool as long as others keep planting them too deep, volcano mulching them, and compacting the soil around them...