I’m curious to know if any of you have first hand experience with Plant Therapy, Now Brand, Aura Casia or Dr. Mercola Brand Essential Oils.
While I use a variety of brands, I took 100 hours of Aromatherapy and the instructor of the course claimed that young living, doterra and NOW were not true therapeutic quality. She’s a clinical aromatherapist. 
So what is her suggested brand? I’d agree on NOW brand and wouldn’t dare use it with pets. . I’ve had nothing but success with YL and have seen some amazing outcomes. I’m less of a Doterra fan, mostly because of the fractionated distillation process. (Which may have changed over time). And for integrity reasons in the ownership from many moons ago.
There is a big hubbub about the term therapeutic grade, medical grades etc. not actually recognized by the FDA. Everything eo falls into cosmetic category.