Since the work was only completed 2 days ago, I am not able to give an opinion about the effectiveness of the orange oil. I notice that one of the workers wore a mask when he was doing my garage, but I assumed from what they and the salesperson told me, that it was safe for me. However, I have had to leave the garage door open since they left 2 days ago because the orange fumes are so strong that my throat and chest feel tight. My car is still out of the garage because of the overwhelming odor of the orange oil.