The replaceable carbon filter acts as a second layer of odor defense. The system is whisper quiet, and the LED light will ensure you that the system is running and giving your cat a carefree, clean litter box. All you need is premium clumping litter and recycled plastic shopping bags for a quick, hygienic cleanup. Self-Cleaning Litter Box Bowl rotates and sifts clumps from the litter, making a full rotation every hour and a half. Reduced Odor Waste bin is covered to help contain odor and a replaceable carbon filter acts as a second layer of odor defense.Whisper-Quiet The motor is quiet, making it easy to forget about your cat's litter box; the LED light ensures that the system is running. Easy-to-Clean Waste bin can be lined with recycled plastic shopping bags or nothing at all for an eco-friendly, scoop-free cleanup. For cats up to 15 pounds. Replaceable Litter Box Carbon Filter. The item "PetSafe PAL00-16741 Simply Clean Automatic & Self Cleaning Litter Box Max 15lbs" is in sale since Thursday, July 1, 2021. This item is in the category "Pet Supplies\Cat Supplies\Litter Boxes". The seller is "frankyscorners" and is located in Miami, Florida. This item can be shipped to United States.