The foam filters protects the pump from cat hair & debris, reducing the need to take apart the pump for cleaning as often. A foam filter comes with every fountain. Each filter lasts at least a year to two years, depending on usage and care.
The optional carbon filters remove impurities in your water such as chlorine and odors. Each pack of two will last from 6 months to a year.
SHIPPING is included in the price. If purchased with other items $4 will be refunded on each additional item. Filters purchased without a fountain will ship via USPS.