Just got a 2002 Corvette from my brother. It sat for two days without being run, and the battery was dead. I popped the hood to charge it, and a healthy looking rat was sitting on top of the motor. After a couple seconds of looking at each other, he took off.

I had always heard that GM and Toyota were wired deliciously, and prime candidates for rat fine dining, but two days?? I found a bit of chewing on a wiring loom under the battery box, and have to check it out and see if I have a draw of juice there, which might explain why the good battery went dead.

We do have rats around here, and I am pretty sure it didn't come with the car.

Anyway....Does anyone with experience in using an ultrasonic rat deterrent have a recommendation on which one I should buy? I am thinking of getting one that stays in the engine compartment and runs all the time, since the car will be usually be stored using a battery tender. All the models on Amazon claim they are best.

Thanks