Since we use HOST, it always smells like oranges and fresh clean house scent at the end of the cleaning.
If the customer has pets, more dog hair then urine, I usually like to use some Hydrocide - Laundry smell. Sooooooooo good. Small pump sprayer is used to spray it in the room on mist.
We also have a ton of the vapor disks. Actually we just used about 40 of them during December for Christmas. The Pine Forest ones make the house smell like a Christmas Tree. People liked them for when they had a fake tree, they stuck them right under it. lol
Those are pretty strong to when you put a piece in the customers out going vent. When they turn on the air/heat it blows out and deodorizes well.