deer repellent

Deer repellent is any substance or device used to discourage deer from eating plants or entering an area.

Commercial repellents typically work through unpleasant taste or smell—often containing ingredients like putrescent egg, garlic, or capsaicin.

I sprayed deer repellent on the hostas, but they ate them anyway.

Home gardeners also use soap bars, human hair, or motion-activated sprinklers as improvised deer repellents.