FAQ Search Select a Category Cleaning Formulas Cleaning Tips Corporate Deep Cleaners FAQ Hard Floor Cleaners Parts and Accessories Steam Sweepers Vacuums Warranty Web Site and/or go When using this product, how long does the treatment last? Answer: Each treatment of Acarosan® lasts up to two weeks when using the spray. The powder will last up to four weeks. Related Questions How do I best use the Acarosan liquid Spray product? Where can I purchase the BISSELL One Step Wood Floor Care? Where can I buy the BISSELL OxyPRO Natural Orange? How do we use the 3X Concentrated Formula?