For outside application to repel entry into homes, garages etc., apply several drops of pure clove and cinnamon or any other oil listed to cloths, cotton balls where snakes may potentially enter. Set them at entry points or hang up strips of saturated cloths in confined areas.
Lemongrass produces a citrus smell that deters snakes. Citronella is also a by-product of lemongrass, which mosquitoes detest. This is one of the best plants that repel snakes, mosquitoes, and even ticks from your garden. Lemongrass is drought-resistant and easy to maintain.
The fact remains that the scales of snakes are mainly designed to repel liquids. So, the chances of snakes absorbing the acidic content of vinegar are most likely not going to happen. However, snakes can stay away from white vinegar because it confuses their sense, (smell), and organs.