Sage smudging prayers for a home are available at Beliefnet.com and NaturesForYou.com. The prayer from Beliefnet.com says, "I cleanse this room of any impurities, negativity or anything that does not suit or support the people that live here."
Beliefnet.com includes step-by-step procedures to use with the prayer, which should be repeated in each room. Naturesforyou.com explains the steps in the sage smudging ceremony, including the materials needed and how to proceed. The site offers a prayer that entreats the heavens for the cleansing of hands, feet, heart, throat and eyes, all for higher spiritual use of each body part. The prayer concludes by asking the sage smoke to carry the prayer to the heavens, cleansing the person and space.