Roughly 130ml a month for each SOSA Vaayu on the floor, and I want to be exact about what kind of number that is, because a procurement sheet will treat it as a specification and it is not one. It is division. The Vaayu has a 400ml tank, and the product page says it runs 90+ days a fill. Four hundred divided by three is about a hundred and thirty, and that is the entire derivation. Behind the division sit four assumptions, and each of them is a decision your floor has not made yet. The setting. A nebuliser at a higher intensity pushes more oil into the air per hour; a step down pushes less. On an appliance floor the setting should be a step down from what a furniture showroom would run, because steel, glass, stone and lacquer bounce fragrance around and there is almost no fabric to absorb it, and the level is set for the advisor who stands there nine hours a day, not the visitor who is there for forty minutes. A floor set correctly for hard surfaces will come in under the arithmetic; a floor set for a hotel lobby will come in over it, and its team will be telling you so. The hours. A ten-hour day is the assumption. The 8h timer window on a six-day week uses less; a twelve-hour day with late trading uses more; and a machine left on the 24h setting overnight, when the AC is off and nobody is on the floor, is the single largest waste I see, because sealed overnight air holds the fragrance and the morning opener still finds the floor smelling of nothing and turns it up. The door and the ceiling. A street or mall door exchanges threshold air many times an hour, and a floor that props it open in mild weather is sending fragrance out with every exchange; place the source inward and accept it, never turn up to compensate. A double-height atrium or a converted-warehouse floor holds far more air than its footprint suggests, which is why the honest ladder counts volume - the Vaayu is rated to 1000m³, not to a square-foot figure - and a tall floor uses more per square foot than a low one. The demos. On a floor with a live kitchen, an oven or hob demonstration or a coffee-tasting counter, the machine is off while the demonstration runs, because the demonstration owns the air, the demo zone stays unscented, and extraction, not fragrance, clears the room afterwards. Two demos a day on the timer take a real bite out of the monthly figure. Now the larger centre. Past about 3,000 sq ft of one connected floor, the honest machine is one SOSA Angaan at ₹25,999, rated to 3,000m³ with an 800ml reservoir and programmable schedules. It uses more fragrance than a Vaayu, for the plain reason that it is fragrancing three times the air, and I will not attach a millilitre figure to it because its schedule and setting vary more between centres than a Vaayu's do - the arithmetic is yours to run once your schedule exists. And the supply: the four 100ml bottles in the Vaayu box are the supply - the first fill and part of a second - and refill availability is confirmed with SOSA before anyone in procurement writes a monthly line. At the reception desk, a Mountain Breeze reed at ₹849 uses 50ml over 6-8 weeks, and its consumption is a bottle life, not a rate. Then the footing that belongs on a consumption page as much as anywhere. Fragrance is an interiors decision, like lighting or music: you consume it because you decided how the floor should feel, and SOSA makes no claim that any millilitre of it changes footfall, dwell time, conversion or sales. SOSA makes no claim about what fragrance does to any appliance, screen or finish on display; the one product fact is that a waterless machine adds no moisture and leaves no residue. It is never a substitute for ventilation, cleaning or extraction, and the live kitchen and coffee counter stay unscented. What it costs per month in full puts the electricity beside this figure; ask for a showroom scenting plan and we will run the arithmetic on your hours.