Is Tea Tree Oil Safe to use ? September 29, 2014 No Comments Yes, Tea Tree Oil is safe, it contains natural germicides. Previous Post Next Post You may also like August 18, 2018 Do you guys sanitise and deodorise the ducts after cleaning? March 12, 2015 Can you do carbon monoxide testing? September 29, 2014 Do you remove rodents & animals from the duct systems?