i use a sharper image ionic breeze with uv light for the lr that is placed in a small closet. no odor whatsoever from day one.
even when we had the lr in our bedroom...i never really noticed a smell when my cats took a dump. it was the sound of the motor that woke me up but, as i am told, it is A LOT quieter than a litter maid (without the alarm going off).
