Eucalyptus oil is known as an effective tick repeller and killer. Just combine 4 ounces of purified or distilled water to a small spray bottle along with 20 drops of eucalyptus essential oil. Shake before using and spray on skin, pant cuffs, and shoes.

https://www.farmersalmanac.com/7-natural-tick-remedies-work-27452#:~:text=Eucalyptus%20oil%20is%20known%20as,%2C%20pant%20cuffs%2C%20and%20shoes.