10 Best Squirrel Repellent 2025 in the United States

The BORHOOD Ultrasonic Rodent Repellent is designed to protect cars from mice, rats, squirrels, and similar pests by emitting ultrasonic waves between 18,000 and 36,000 Hz combined with LED strobe lights. This high-frequency sound is inaudible to humans and pets, making it a safe option for households with children and animals. It offers flexible power options, including battery use, USB charging, or direct DC connection under the car hood, adding convenience depending on your setup.

Its intelligent vibration sensor pauses the device when the car is running to save energy, with a standby battery life of around three months. The device is compact and easy to install with cable ties, and it’s versatile enough for indoor and outdoor use, including garages and storage spaces. Because it is an ultrasonic repellent, it works best in localized spaces like car engines or small rooms rather than wide outdoor areas.

This product avoids chemical use, which is environmentally friendly, and represents a practical and pet-safe choice for people looking to keep rodents away, especially around vehicles and small enclosed areas, though its range and effectiveness might be limited outdoors.

Grandpa Gus's Rodent Repellent Spray uses natural peppermint and cinnamon oils to create a scent barrier that discourages rodents like mice and rats from nesting or chewing, which can be helpful around homes, vehicles, and stored equipment. It comes as a 16-fluid-ounce oil-based spray mixed with water, allowing it to spread quickly without leaving stains. This product is designed mainly for indoor use and works by leaving a dry residue that rodents avoid or get on their paws, making it effective for protection against chewing damage. The fresh peppermint scent doubles as a mild air freshener, which some users may find pleasant.

The spray can be applied to both small and large areas, but reapplication is necessary if the treated surface becomes wet, dusty, or exposed to heat, which may limit the duration of protection. While the product is natural and water-based, it’s important to keep it away from children and pets, suggesting caution in homes with young kids or animals. The application process is simple—just shake and spray on dry surfaces, waiting for it to dry before a second coat.

This spray is not specifically formulated for outdoor use or wide open areas where squirrels often roam, so it might be less effective for those looking to repel squirrels in gardens or yards. Being natural and water-based is an environmental plus, but disposal instructions indicate the container is non-refillable, which is less eco-friendly. If you want a scent-based, easy-to-use indoor rodent repellent with natural ingredients, Grandpa Gus's spray can be a good choice, especially for keeping mice and rats away from wires and nests. However, if you need something stronger or for outdoor squirrel control, you might need to look for more specialized options.

This solar ultrasonic animal repellent is designed to keep squirrels and other small animals like rabbits, raccoons, and deer away from your yard or garden using sound waves and strobe lights. It detects movement up to 32 feet within a 110-degree range and then emits a 30-second ultrasonic signal combined with flashing lights to disturb the animals without harming them. Since it is solar powered and waterproof (IP65 rated), it can run outdoors continuously with minimal maintenance, making it energy efficient and environmentally friendly.

The device is easy to set up—simply place it in direct sunlight about 9-10 inches off the ground and adjust the settings to match the target animal's size. To cover larger areas effectively, multiple units may be needed to avoid blind spots, as a single device covers a limited zone. It is safe for pets and children because it uses non-chemical methods, though pets sensitive to ultrasonic sounds might be affected, so careful placement is advised. The device requires an initial full solar charge before use, and keeping the solar panel and sensor clean helps maintain optimal performance.

The combination of ultrasonic sound and flashing lights provides a strong deterrent, but animals may become accustomed to it over time if the device is not repositioned or supplemented with other methods. This repellent is suitable for homeowners seeking a humane, low-maintenance solution to protect outdoor spaces from squirrels and similar pests.