If rats are entering your car engine bay and biting wires and accessories, you can install Varna Suraksha Rat Repeller Auto model within the bonnet area and repel all rats intruding.
How to install Ultrasonic Rat Repeller?
Fix the repeller (using plastic tag) facing speaker towards the bonnet hood.
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Connect the repellent wire to the battery terminals.
Stick aluminium foil on the heat insulation pad to reflect 100% of ultrasonic sound throughout the engine bay. Please ignore this step if you don’t have heat insulation pad within the hood.