I saw a demonstration of it at some home improvement show in Honolulu. They had two aquarium-type setups of termites, one with the gravel and one without. The wood target piece above the gravel bed was untouched. The wood target without the gravel was riddled with holes.
Supposedly the university is working with builders in Hawaii to make this discovery available to home owners. Simple but effective.
I see.
Post # 23 supports your information.
Neat stuff.