Dr. Browns Electric Sterilizer And Dryer W/ Hepa Air Filter (Plus 1 Extra Filter)Eliminates 99. 9% Of Bacteria, Mold And The Yeast That Causes Thrush. Contents Stay Sterilized For Up To 24 Hours If The Lid Is Unopened After The Completion Of The Cycle Meaning You Can Keep Your Bottles And Parts Stored Inside With No Contamination. The Two Included Hepa Type Filters Capture Up To 95% Of Airborne Particles, Ensuring Purified Air For Superior Drying. Each Hepa Type Filter Lasts For Up To 6 Months For A Full Year Of Filtration An