Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Have two of them and love them

I have two of these. I use one in my livingroom and one in my family room. They DO work and work well. I have 3 cats and a dog. When the brethe machines are running the air in the house feels fresh and smells good. I do agree that the vanilla scent is horrible. The lime and citrus are ok, but I like the lavender the best. It smells wonderful. I thoroughly believe this does clean the air to some extent. When I turn mine off the remaining water had a brown tint to it a lot of the time. Obivously the Brethe is not going to be as effective as an air purifier, but it doesn't make those claims. I believe it does exactly what it says and I am very happy with it.