There are several scents and methods that can be used to deter squirrels, according to the search results:

• Apple cider vinegar: Towels doused in apple cider vinegar can be used in the attic to deter squirrels. A spray solution of pure apple cider vinegar can also be sprayed directly on plants and flower pots to keep squirrels away.

• White vinegar: White vinegar has a strong smell and can be poured on squirrel-infested areas to deter them.

• Jalapeño pepper: Jalapeño pepper mixed with vinegar produces a pungent smell that squirrels dislike. A spray solution can be made and sprayed in the attic to check their entry.

• Fox urine: Spraying fox urine in the attic and near plant beds can deter squirrels.

• Cayenne pepper: Sprinkling cayenne pepper on plants being targeted by squirrels can deter them from taking tomatoes, picking peas, swallowing spinach, and chewing cabbage. Sprinkling a ring of cayenne pepper around the perimeter of a garden may also deter squirrels.

• Predator urine: Spreading predator urine around a garden can deter squirrels.

• Scented plants: Squirrels dislike certain scents, such as oniony-smelling members of the allium family, strongly-scented hyacinths, and lily of the valley. Planting these in borders may help keep squirrels away.

• Motion-activated sprinkler: A motion-activated sprinkler can be angled to the correct position to detect when an animal is near and can be used to deter squirrels.

Its important to note that while these methods may be effective, they may not work for all situations and may need to be combined with other methods for best results.