Arm & Hammer Hoover Type Y&Z Premium Allergen Vacuum Bag Fits all hoover* wind tunnel* (excluding wind tunnel* 2), savvy*, tempo* wide path* bagged uprights, upright cleaners using z bags including auto drive*, breathe easy*, caddy vac*, dimension*, dirt finder*, power drive,* powermax*, and turbo power* 3500, 3700, 4500, 5000, 6000, 7000 uprights Arm & Hammer baking soda has been trusted to neutralize the toughest odors for generations, helping you create your fresh home Arm & Hammer premium allergen vacuum bags capture 90Percent of allergens at 1 micron or larger including pet dander, grass and ragweed pollen, household fiber and dust mite debris Change your vacuum bag every 1-2 months or more frequently if it becomes full and firm to the touch Vacuum bags keep dust, dirt, and debris from escaping back into the air for a more hygenic clean than bagless vacuums