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Review title: Worse the the older model
Product review: I've had this model for a month thinking also new & improved, WRONG. I have the same clumping problem as everyone else, I tend to go away for a few days at a time & NEVER had a problem with the older model. It needed some maintenance & occasional cleaning of the teeth, but at least it had the power to keep working even with back clumping. Tossing this & going back to the older model which worked flawlessly for 3 years.
