It is good for small room.but if u have a long room .its work like nothing .its take too much time to cover long room.so its effect is too low at long disatce room. But u have small room.it is batter .bcz in the small room.its effect is strong.and so that it works batter.
This product.is sometime creat a very bad smell.by which some people not feel good or their mood are spoiled bcz of this.
So if u have samll rooms.than this product is vest for u.but if u have long rooms.plz stay away from this product.thanks