In this photo released by the University of Florida's Institute of Food and Agricultural Sciences, Cynthia Tucker, left, a UF graduate student majoring in entomology, and Roberto Pereira, a UF research associate, use a thermal imaging camera to measure heat transfer through building materials damaged by termites at UF's main Gainesville campus -- March 11, 2008. All three building materials were damaged by termites, but the pest caused more thermal damage to insulation than to wooden 2x4 or plywood samples. Materials damaged by termites were shown to be less energy efficient, resulting in higher heating and cooling bills.