✔️【Perfectly Compatible】：Compatible with your Litter refill cartridge. ✔️【Guarantee odor control】：We understand that the odor control is the first consideration . Our enhanced 7-layer smell-bloc technology helps blocking the smell to keep your home fresh. ✔️【Easy To Use】: The litter box refills are easy to assemble, please follow the instructions for use or the video on the description. ✔️【ATTENTION】: Original refill cartridge is not included. Save and reuse your empty refill cartridges! ✔️【Things Included】：9 pack of refills and a disposable cap are included. ✔️【Perfectly Compatible】：Compatible with your Litter refill cartridge. ✔️【Guarantee odor control】：Comprendiamo che il controllo degli odori è la prima considerazione. La nostra tecnologia avanzata di blocco degli odori a 7 strati aiuta a bloccare l'odore per mantenere fresca la tua casa. ✔️【Easy To Use】: The litter box refills are easy to assemble, please follow the instructions for use or the video on the description. ✔️【Cost Saving】: Longer film in the cassette provide a more favorable cost for a longer lasting time.