I bought the Renuzit Crystal Elements and am in love with the product. I was a little unsure at first because I thought it seemed a little pricy. My daughter put it in a container I already had at the house. When I came home and walked in the house it smelled great. I am use to burning candles when I am at home. Once I started compareing that the Renuzit Crystals lasted for forty five days it seemes like maybe it is a pretty good buy after all. Since my first purchase I have purchased the Crystals on two occasions for other areas in the house. Will buy again.