| 摘要 |
A time and temperature duration indicator facilitates eradicating of pests. The invention contemplates a temperature sensor including a material that changes color when the desired temperature is achieved. The color change allows one to view a colored spot. A wax may be employed that melts at the desired temperature and provided in sufficient quantity that complete melting indicates the desired temperature and duration have been achieved. In another embodiment, a temperature sensor sends a signal to a computer/timer. When the signal indicates that the desired temperature has been achieved, the computer starts a timer. When the timer indicates to the computer that the desired temperature has been maintained for the desired time interval, the computer activates an indicator. Several embodiments are contemplated for holding the inventive device at a desired location. Methods of operation are also disclosed.
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