Snake Repellents: Fact or Fiction? Here's the lowdown: Whether homemade or commercial, despite the clever marketing they do not work and they are not supported by any scientific evidence. Chemical Repellents: Many commercial snake repellents use Naphthalene (found in moth balls) and sulfur - these ingredients sound intimidating, but do they really keep snakes at bay? Studies say otherwise and they can have a negative impact on health and the environment. Natural Repellents: Some people use natur