When I looked up the reviews and penny royal to learn more about it, I read how dangerous it was and can have a negative impact on both animals and humans. Because of this, I dumped the contents down the toilet, as it will be disinfected and not hurt any animals like it may if I just threw it away.
This company always makes great essential oil products that are strong and natural, unfortunately this one just happens to be a harmful essential oil. I would recommend going with a mint, pine, or peppermint essential oil if you seek a minty or nature-y smelling oil! :)
*I received this product at a heavily discounted price in exchange for my honest and unbiased review*