I am an avid gardener. I have both a flower garden with annuals and perennials as well as an annual vegetable garden of some kind. It is a fun pastime that I enjoy very much. I also have dogs. Now, dogs and flower gardens don't always mix well so I plant my flower gardens in the front yard where the dogs don't hang out just to be safe. It is easier to do that than keep track of the plants that are toxic to dogs and I can show the blooms off better there anyway. My dogs also tend to trample my flowers so it works well all the way around!
Why do I bring this up? Because if a certain plant is toxic to your pet in plant form, it is probably toxic in oil form since the oil is extracted directly from the plant and is very concentrated. A comprehensive list of these plants can be found on the ASPCA website. This is an important factor when using essential oils or products that contain them in your home. Eucalyptus, a popular essential oil that is commonly used for aromatherapy, medicinal and cosmetic purposes, is poisonous to both cats and dogs. Does this mean you should never use these products? Not necessarily. It means that those products should be kept away from your pets to keep them safe just like you would keep them away from those plants in your garden. If in doubt about a certain plant, check the ASPCA website or any poisonous plant list of your choice.