Use Holy Water to bring make a place Holy

(What do you do with that holy water?)

    You take that holy water and you sprinkle it in all corners of the house.Sprinkle it around – that’s to keep your home holy.  Or, if you got a store,that’s to keep your store holy – keep you out of trouble and ‘cumulate – [also]make you ‘cumulate things around your home.  You see, that holy water is blestby de priests and things and then it’s blest by the Lord, you see.
Vol.2,p.1634 Informant in New Orleans

Another one from Hyatt, but also kind of an obvious thing. Use Holy Water. It should be easy to procure, especially if you are already Catholic, but you can also walk into some churches and they will have some available for the faithful.
Simply sprinkle holy water around your home or business to keep it holy. This holiness can achieve many results from protection, peace, bringing good luck, helping to resolve problems etc.