Replacement Period: Carbon filter needs changing every 2 to 4 weeks while foam filter needs cleaning every 2 to 4 weeks and replacing every 2 to 4 months for better water quality, mainly depending on water condition and the number of pets.

4-Stage Circulating Filtration System - The system uses a replaceable round filter to purify the water, remove dirt and food particles . The round filter is composed of cotton layers, coconut shell activated carbons and ion-exchange resins. It provides fresh clean water to your lovely pets.

Health and Safety: Made of eco-friendly and non-toxic materials, the filters help ensure the water quality and provide healthy and pure water to protect your pet's health.

Replacement for iPettie Cat Drinking Fountain Stainless Steel - The package includes 4 carbon filters and 2 foam filters.

Kind Reminder: Before the replacement, rinse the filters with clean water, and it is better to have a constant and sufficient supply of filters to ensure the water quality.