Instruct: Classify the given review into positive or negative sentiment.
Query: This vac does NOT SUC..enough.

Horrible upright. Maybe uprights aren't good for me, but this thing spit out everything it picked up, right back onto the floor. Dust bunnies, single pieces of cat litter, a microscopic bit of paper, it all went right back onto the floor. And I checked the hose and filters too!