Like oil and water, essential oils and cats really do not mix. Owners should be cautious using essential oils and diffusers in their homes in order to protect their cat(s) from a toxic risk. Most importantly, concentrated essential oils should never be directly applied to cats.
The aforementioned essential oils are safe for cats, but should still be diluted or diffused. Use them in moderation to maintain a safe environment for your pet. Essential oils are likely more safe for cats than artificial fragrances and air fresheners.