Filtrete Vacuum Bags are guaranteed to be free from defects in material and workmanship. Filtrete Micro Allergen Vacuum Bags capture 90% of particles larger than 1 micron in size, including dust mite debris, grass and ragweed pollen. Vacuum bags should be replaced every 30 to 60 days for optimum performance.
From the air your vacuum pulls through the bag, Filtrete™ Micro Allergen vacuum bags capture 94% of particles larger than 1 micron in size, including dust mite debris, grass and ragweed pollen. They also capture 57% of particles between 0.3 and 1 micron in size, including household fibers and other microscopic allergens.