Patent ID: 7450473

Claim:
A method for protecting a vehicle from undesirable damage caused by rodents, said method comprising the steps of: a. providing a housing electrically coupled to an existing power supply source of the vehicle; b. providing a power conditioning circuit; c. said power conditioning circuit receiving an input voltage signal from the existing power supply source and thereafter generating a plurality of stepped down output voltage signals respectively; d. providing a signal generator electrically coupled directly to said power conditioning circuit; e. said signal generator transmitting an oscillating output signal having approximately a 32 kilohertz wave length; f. providing an amplifier electrically coupled directly to said signal generator; g. said amplifier receiving said output signal and thereafter transmitting an amplified signal; h. providing an ultrasonic transducer electrically coupled directly to said amplifier; i. said ultrasonic transducer emitting an ultrasonic output signal based upon receipt of said amplified signal; and j. transmitting at least one of said stepped down output voltage signals directly to said amplifier while transmitting another one of said stepped down output voltage signals directly to said signal generator respectively such that a frequency of said amplified signal is amplified over a range to achieved optimum operation of said ultrasonic transducer.