Review on 🌿 EcoGecko Little Squirt Air Revitalizer - 4.25 inches in Diameter and 5 inches in Height - Color: Black by Youngone Sevenfourgd

I was expecting the machine to hum a little but it is actually a bit noisy. I bought it for the guest room but I'm afraid it will be too noisy for anyone to sleep. Since cats aren't too concerned, I'll keep it to myself, but will buy a more expensive and hopefully quieter model for my office. Update 01/14/2021: This must be a defective model. It only got louder the longer I had it. It works in terms of room refreshment, but the noise is too distracting to keep it on for very long.