Arm & Hammer (ARMCW) Dirt Devil Style U Premium Allergen Pkg Bag 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 90% of allergens at 1 micron or larger including pet dander, grass and ragweed pollen, househould 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