In terms of both cost and quality of ingredients, this easy-to-make spray beats the commercial stuff by a mile.

I tested 12 essential oil diffusers to compare their scent quality, design, ease of use and functionality. Three emerged as the best for most people.

From using the best smart speaker to play music and read recipes to asking ... example of this is a smart diffuser. Smart diffusers act in a similar way to the best oil diffusers.