Mighty Mint Vehicle Rodent Repellent is the natural way to protect vehicle interiors and exteriors from rodent damage. The spray is made with high-strength peppermint essential oil - a proven deterrent for mice and other rodents. This Northwest peppermint in particular has a smell that is pleasant to humans, but irritating to unwanted pests. For best results, use as a preventative measure before rodents have nested. ************************************************************************************************************* Directions for Use: Liberally spray problem areas such as your vehicle's interior or engine compartments to keep rodents from entering or nesting. For best results, spray until the surface is covered and repeat the process regularly.