How can I save on washroom fragrance maintenance costs?

visionair with Maxi Plus refill Room Fragrance & Odour Control Why lowest cost in use? - 9000 shots per can Dispenser Setting Standard size aerosol refill No. of refill changes per year Maxi-Plus lasts No. of refills per year 30 days 30-33 days 12 99+ days 4 45 days 45-40 days 8 150+ days 3 60 days 60-66 days 6 180+ days 2 Up to 60% saving