Instruct: Classify Amazon reviews into positive or negative sentiment
Query: gone, gone, gone

i was hoping that this litter box would deliver me from litter box hell...i think it infact sent me further into it's depths. i have never once smelled "cat" or have been told that my apartment smells of "cat"...since owning and using this litter box i, myself, notice that my apartment smells of "cat". this product worked well at first but as others have claimed it began to fail and never avenged it's self. do not waste your time with this product unless you enjoy frustration and disappointment.