Mr. Manderfield promised to get back to me, with a response from the company, within a week. I also contacted a friend in Vancouver, B.C., Canada, Gillian Willis, who is a toxicologist, about the products being used in the Ford's home. Although it doesn't pertain to the candles specifically, the information I received is quite pertinent. Ms. Willis was quite helpful and provided the following information. The majority of these oils can cause either stimulation or depression of the central nervous system, as well as possible irritation to the eyes, nose and upper respiratory tract, depending on the oil and concentration used.
Birds are very susceptible to the effects of inhaled volatile toxins, including essential oils.
More recently, I was consulted on a case involving two cockatiels that presented to my avian vets. One bird had been lethargic for a few days and was brought into the clinic for assessment. The owners brought in it's mate to keep it company during hospitalization. Over a period of hours, both birds became progressively lethargic, could not stand, developed hyperventilation and respiratory distress. Despite aggressive intensive care treatment, both birds died within a minute of one another, within 24 hours of presentation to the clinic.