Product Description Package Content: 8 Packs of Filters 1. Economy Pack: The carbon filter set includes 8 packs of replacement cat fountain filters, encourages your cats and dogs to drink more, helping them replenish moisture and stay healthy. 2. For Cat's Health: Made of thick PP cotton for longer lasting filtration which ensures the filters can withstand water flushing and separate debris, impurities and other solid substances without breaking easily. Provides healthier filtered and hygienic drinking water. 3. Unique Design: Compared with conventional filters, this cat fountain filter replacement could make filtration more durable and need less frequent water change. 4. Warm Suggestion: Please rinse it before use. Replace the filter every 1-2 weeks in summer and every 2-4 weeks in winter to maintain water freshness. More frequent replacement will be required if multiple cats are using. 5.Keep Your Pet Healthy: Help keep the pump cleaner between cleanings, maintain fountain flow, provide a better quality of life for your pet