White vinegar is among the common solutions used in areas where moisture is present, such as the edges of ponds, poolside decks, or damp crawl spaces. It is highly acidic, and its strong smell is thought to interfere with a snake’s ability to “taste” the air properly.
It may work in situations that require a quick, targeted response, but white vinegar acts as a non-selective herbicide. It can damage plants and alter the pH balance of your soil, so it’s not something you should use extensively in your garden.
Garlic and onions
These two have their pungent sulfur smell, particularly once they’re diced up or minced, that supposedly drives snakes crazy.
People will leave these out near entrances, or make their own “smell sprays,” but here’s the rub: Once that stuff starts to decompose, it attracts all sorts of critters, including insects and vermin—animals that snakes prey upon. In addition, onions and garlic are actually dangerous for dogs and cats to eat. And again, the science on whether a snake actually cares about the smell of your kitchen scraps is pretty thin.
Citrus, lemongrass, and citronella
Citrus and other plants such as lemongrass and citronella are some of the most popular organic pesticides out there. These are the plants with strong fragrances that we usually love, yet bugs, and according to some snakes too, don’t.
Lemongrass stands out since it works against insects. The fewer insects you have, the fewer foods snakes will come for in your garden. In terms of citrus, you can use either dried or diluted fruit oils on patios. Yet, since they degrade very quickly, they need to be frequently reapplied, especially right after rainy days.
Cedar oil and cedar mulch
Cedar has its natural oils, which produce the distinct “closet” odor, said to be particularly unpleasant for reptiles. Adding cedar mulch to your landscaping will also prove helpful since it helps maintain a dry environment that won’t attract insects.
This choice seems attractive, practical, and decorative; however, it is not an ultimate solution. One more aspect to consider is that it may drive away beneficial insects as well.
