Probably not, unless further precautions are taken. Termites swarm annually looking for a place to live. If your home was treated successfully and all the termites were killed, but you still leave their tunnels behind uncovered, the tunnels will serve as ready-made condos for new swarms. To help reduce the possibility of reinfestations you should consider a borate or other residual treatment, spraying all unfinished exposed wood and injecting all tunnels making these areas unattractive to termites. Also you should consider caulking around all windows, removing all wood and debris under or next to your house, keeping your exterior wood properly painted, as well as placing a very tight meshed screen wire on all attic and subarea air vents.
Most warranties cover one to two years.
Beyond that the best course is regular maintenance and an annual inspection so that if a re-infestation does occur it can be treated early while still a localized infestation, thus keeping your cost down. Household and telephone wiring is unaffected, however, electrical devices which may have sensitive circuits, such as the telephone itself, TVs, stereos, alarm systems and the like must be disconnected to avoid damaging their sensitive circuits. These items will be listed in the Customer Preparation Guide given to you by the inspector when the Electro-Gun is going to be used in your home or building. In addition, in spite of the high voltage, the low current and high frequency of the current provides not only safety for people in the area, but also does not allow for significant temperature increases even in the areas treated. Refer to the Info for the Homeowner for more details.