Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cute, effective and budget friendly

We purchased this in April 2010 and have used it for every nap and night since bringing it home. We've always used distilled water so no filters or anything. Maintenance is nothing outside the norm...clean with vinegar solution to prevent mold/bacteria. I took one star off because sometimes the motor runs loud...there doesn't seem to be any rhyme or reason for it but have found that it quiets down after it has run for awhile. Happy twins without crusty noses and happy mama!