Although critters are natural and should be respected from a distance, most people don’t want them in homes or gardens. A viral Facebook post by Elizabeth Liesch claimed she deters pests using a simple setup: “cutting “V” shapes into plastic containers, filling them with water, and dropping in four to six mothballs,” saying it keeps mice, rats, skunks, snakes, and even coyotes away.

Before copying this idea, there is an important safety issue. While the goal is humane pest control, using mothballs outdoors in water is dangerous and in many places illegal. The intention may be good, but the method can harm the environment and wildlife instead of protecting it.

It is important to understand that “mothballs are not just strong-smelling deodorizers; they are solid pesticides.” They contain toxic chemicals like naphthalene or paradichlorobenzene. When used outdoors, especially in water, they can release harmful fumes and contaminate soil and water sources, creating risks for animals, pets, and humans.

A safer alternative is a simple peppermint spray. Mix 1 cup water, 1 tablespoon witch hazel or alcohol, and 15–20 drops peppermint oil. Spray around doors, windows, and entry points. Cotton balls soaked in peppermint oil can also be placed in corners and replaced every two weeks for longer effect, helping repel pests without harm.

For larger animals like skunks, coyotes, or javelina, humane deterrents work best. Motion-activated sprinklers discourage entry without injury. Removing food sources like trash or pet food is essential, as animals move on when there is nothing to eat. Perimeter sprays with garlic and cayenne, plus motion lights, also help keep wildlife away safely.