You have many options when it comes to selecting an essential oil diffuser, but only cold-air nebulizing scenting machines can distribute highly-concentrated scent over such a large area without compromising the oil’s chemical integrity. Unlike ultrasonic diffusers, these devices create a very fine mist that leaves no residue and do not need to be diluted using water or additional solvents beforehand. The bottom line is that if you want to experience the purest and most potent fragrance possible, you need one of these innovative scenting solutions.