The only vacuum with zero filter maintenance: Dyson's Cinetic Big Ball Animal Plus Allergy Upright Vacuum is designed for homes with pets. Dyson Cinetic science is so efficient there are no filters to wash or replace. Dyson Cinetic tips oscillate at up to 5,000 Hz, separating the microscopic dust that clogs all other vacuums. The dust separation means there's no need for a pre-motor filter, so Dyson Cinetic science doesn't lose suction. Ball technology allows easily steering into difficult places with a simple turn of the wrist.