From the bloggers at Do it Yourself RV:
Little rodents may look cute, but they’re anything but adorable when they’re building nests in your RV or car. Their sharp little teeth and powerful nesting instincts can destroy a vehicle’s insulation, hoses and wiring system overnight.
Before you activate your own four-legged rodent patrol militia, consider trying the MouseBlocker, an ultrasonic RV rodent control device that blasts invading critters with high frequency sound waves.
Every fifteen seconds, the rodents invading your RV will get blasted by the MouseBlocker with a high frequency audible (only to them) tone. The small device runs off your vehicle’s battery and draws only as much power as an LED clock, approximately 0.1 watts. The manufacturer claims that this allows the MouseBlocker to run for months at a time without any excessive drain on the battery system. The MouseBlocker can do its job anywhere there’s a 12 V power supply.
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