Eucalyptus 1.6oz Oil Base Fragrance. For Use With Bagless Vacuum Filters, Vacuum Bags, Vacuum Water Filters, and Humidifiers. One 1.6oz Bottle Per Order. Oil Base Vacuum Scent extremely effective and come in a highly concentrated form that eliminates virtually "all household odors" in both the kitchen and bathroom. They're also perfect for use throughout the house or in vehicles as well.