After using this product for close to 6 months I can say, this is the most effective device I have come across to save my car from rodents. After fixing this not even a single instance of my car being attacked by rodents, and the best part is my wife's car normally parked next to mine also getting the protection. We have not seen any droppings inside bonnet area, which is a good indication. The only irritant with this product was a periodic buzz sound to indicate device is functional that filters inside the cabin while driving. I have contacted the seller and they promptly responded. I have shipped the item back to their office and the buzz sound was removed through a custom firmware upgrade. Awesome customer focus. Will recommend this product to anyone facing rodent issue to avoid expensive wiring repairs.