Ruling on using bukhoor (incense) to expel devils
Question

                Some people use a type of bukhoor (incense) that is sold by perfume-sellers, claiming that it expels devils.
Praise be to Allah.
    I do not know of any basis in sharee’ah for doing this, and 
    it should not be done, because it is a myth that has no basis. Devils can 
    only be expelled by reciting a lot of dhikr and reading Qur’aan and seeking 
    refuge in the perfect words of Allaah from the evil of that which He has 
    created. It is proven that the Prophet  (peace and blessings of Allaah 
    be upon him) said: “Whoever stops to rest and 
    says, ‘A’oodhu bi kalimaat Allaah il-taammah 
    min sharri ma khalaq  (I seek refuge in the perfect words of Allaah from the 
    evil of that which He has created),’ nothing will harm him until he moves on 
    from that place.”  A man said: 
    O 
    Messenger of Allaah, I was stung by a scorpion last night. He said: “If you 
    had said, A’oodhu bi kalimaat Allaah al-taammah min sharri ma khalaq 
    (I seek refuge in the perfect words of Allaah from the evil of that which He 
    has created), it would not have harmed you.” And he  (peace and 
    blessings of Allaah be upon him) said: “Whoever says in the morning, ‘Bismillaah 
    illaahi laa yadurru ma’a ismihi shay’un fi’l-ard wa la fi’l-sama’ wa huwa 
    al-samee’ ul-‘aleem (In the name of Allaah with Whose name nothing is 
    harmed on earth nor in heaven, and He is the All-Hearing, All-Knowing)’ 
    three times, nothing will 
    harm him until evening comes, and whoever says it when evening comes, 
    nothing will harm him until morning comes.” 

    I ask Allaah to help us and you 
    and all of our brothers to attain beneficial knowledge and act upon it, for 
    He is All hearing and Ever Near. End quote.