Instructions: Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.
Input: I find this product completely ineffective. One reviewer suggested the need for all plugs to be on the same electrical circuit. I live in an old house, but we've upgraded the electrical. I'm not sure if that's the shortcoming. Nevertheless, this failure was advertised. I'd return this product if I could.
Output:
Negative Review