Instruct: Classify a given review as either positive or negative.
Query: STAINS YOUR WALLS

THE PREDECESSOR TO THIS UNIT STAINS THE PAINTED WALLS. THIS ONE PROBABLY DOES THE SAME THING.I HAVE AN IONIC BREEZE QUADRA COMPACT THAT I REALLY LIKE. WAY BETTER CLEANER THAN ORECK. MAYBE IF YOU LEFT ORECK ON HIGH SETTING ALL THE TIME, IT WOULD CLEAN BETTER. BUT THE NOISE FROM ORECK IS LOUD, EVEN ON THEIR QUIET SETTING.BUT, I WOULD NEVER PUT AN IONIC AIR CLEANER CLOSE TO A WALL. BOUGHT ABOUT 6 OF THESE FOR LAUNDRY, 3 BATHROOMS, AND 2 HALLWAYS. EVENTUALLY THE DIRT THEY ATTRACT STAINS THE WALLS. FORGET ABOUT CLEANING THE MESS, YOU HAVE TO REPAINT.I REPEAT, DO NOT BUY THESE IF YOU ARE GOING TO USE THESE ON A PAINTED WALL. I DID KEEP ONE FOR MY MASTER BEDROOM. ONLY BECAUSE THE RECEPTACLE ON THE WALL HAS A MIRROR AS A BACKGROUND. MUCH EASIER TO CLEAN.