Instruct: Classify a given review as either positive or negative.
Query: Doing its job

I bought this unit needing to clear any food matter remaining between my teeth after brushing and the unit is doing just that. The only thing that I believe is negative is the plastic cable that the pique is attached to as it can acquire a slit and cannot be replaced causing one to have to purchase a new unit which would be much more expnsive than replacing the cable.