I know “natural” compounds are popular now but natural does not equal safe. While cedar has been shown to have some pest control properties, there is also evidence that it causes skin irritation and respiratory tract damage in rodents, birds, and other small animals. Oils such as cedar and tea tree are toxic to animals such as cats, whose liver can’t process these oils easily. There is also some evidence that it can cause cancers and affect reproduction. The volatile aromatic compounds in cedar oil are related to the active ingredient in moth balls. It’s these volatile chemicals that discourage moths. It’s wise to use any pest control product, whether natural or not, with care.