EASY EMPTY? DIRT TANK. Spend more time cleaning and less time emptying. MULTI-CYCLONIC SUCTION SYSTEM. Multi-Cyclonic Suction System with No Loss of Suction.** out and relax ON-BOARD PET TOOLS. TurboBrush? Pet tool and the 3-in-1 Pet Stair tool help clean carpet upholstery stairs & more!Removes most surface debris based on visual test BTP0221Tested per IEC 60312-1 with multiple dust loadings results within accepted tolerance of 5%.