Arm & Hammer Odor Eliminating Vacuum Filter, Bissell 8 Combo: * Designed according to strict HEPA standards * Baking soda particles neutralize odor-bearing chemicals * Releases clean, odor-free air into your home as you vacuum * Replace filter every 90-120 days for optimal performance * Filter is washable * For use in Bissell Lift-Off (3750, 6595, 6801 Series), Lift-Off Revolution (3760 Series), Momentum (3910, 6390 Series), Pet Hair Eraser (3920 Series), Powergroom (4104 Series), PowerClean (92L3 Series) PowerTrak Cyclonic (6390 Series) and Total Floors Velocity (3990, 6393 Series)