The brethe™ Air Revitalizer machine was given to me as a birthday gift. With it came along the four samples of brethe Air Revitalizer Solution. Unlike aerosol room fragrance which smells good for a few minutes then fades just as fast, brethe Air Revitalizer and solution can last for up to 24hrs, liberating all unfavorable odors, and travels through out my entire home. I have a tri-level home in which I keep it on the center level and it refreshes the air to the upper and lower levels. The solution comes in four scents; citrus, lime, lavender and of course vanilla. The revitalizer ($50) and refill solutions ($15) are a little pricey just for aroma therapy but it is well worth the price. If I were asked to recommend these products, my answer would absolutely, 100%, be yes. I have mine on right now!