Review (5/5): Great product - How to fix the motion issue
I really love this unit. After buying a bunch of diffusers over the years I was cautious to throw good $$$ after bad especially given the mixed reviews for this product. Sure enough, after a few days of use, the motion got jerky and stopped. What I noticed is that once you remove the outer case, the motion works smoothly, showing this is where the issue occurs. After gently cleaning and rinsing the outer shell the motion works fine. A gently clean every few days seems to do the trick. Otherwise, this is the Rolls Royce of diffusers.