Peppermint: The strong scent of peppermint can be overwhelming for rodents like squirrels and chipmunks.
Garlic: The pungent smell of garlic can be an effective repellent for these animals.
Onion: Similar to garlic, the smell of onions can deter squirrels and chipmunks.
Spicy Peppers: Capsaicin, the compound that gives peppers their heat, can be irritating to rodents' noses.
Mothballs: The strong odor of mothballs can deter squirrels and chipmunks, but use caution as they can be toxic to pets and humans.
Vinegar: The strong smell of vinegar can deter rodents, but it may need to be reapplied regularly.
Predator Urine: The scent of predator urine, such as from foxes or coyotes, can signal danger to squirrels and chipmunks.
Ammonia: The strong smell of ammonia can be effective in deterring rodents.
Eucalyptus: The strong, minty scent of eucalyptus can be unpleasant for squirrels and chipmunks.
Cinnamon: The strong and spicy smell of cinnamon can also deter these animals.