PETKIT Pet Odor Eliminator N50, Odor Control, Upgraded for Pura Max, Pura Max 2, Purobot Max Pro Self Cleaning Cat Litter Box (Pack of 3) About this item N50 2.0 Deodoriser：The newly N50 cat litter deodorizer cube 2.0 was developed for the PETKIT Pura Max, Pura Max 2, Purobot Max Pro and Purobot Max Pro 2 automatic cat litter trays New Package and Storage Box: Each piece is individually sealed in aluminum bag and packed in a single transparent box. The fully enclosed plastic box not only ensures that your hands stay clean when changing the N50, but also effectively block foreign objects out of the odor removal box, so as to to improve the function Effective Deodorant：the N50 2.0 odor deodorant breaks down odors in waste bins at any time and spreads the fragrance for a long time. It closes continuously and builds odour-causing substances such as ammonia and hydrogen sulfide in the cat's feces, preventing the spread of odors Safe and Non-irritating: N50 2.0 odour deodorant is formulated with non-toxic, non-irritating, high safety and care for the health of family and pets How to Use：The automatic cat litter trays Pura Max and Pura Max 2 have a special place for the N50 2.0 deodorant that you can easily replace, which is very practical and time-saving. Note: If you replace the N50 2.0 for PURA MAX, please cut off the silicone cover of N50 2.0 at first, then put it into the PURA MAX Durable：One piece of N50 2.0 can be used for 30 days, and there are a total of 3 pieces. It can be used for a total of 3 months. Please keep it in a cool place away from light and sealed, and keep it away from fire Multi-scenario: Can be used in anywhere you want to control the odor, like bathroom, kitchen, pet bed