- Upgrade your YOUTHINK Ceramic Drinking Fountain with our replacement water fountain filters, designed to trap hair and debris while eliminating impurities and odors for fresh-tasting water. - Dual-Action Filtration: The ultra-fine holes of the primary filter effectively capture hair, dust, and other impurities, ensuring your water remains clean. The coconut shell activated carbon serves as the secondary filter, purifying the water and eliminating any unpleasant smells. - Each pack includes 4 premium activated carbon filters and 1 foam filter. Filter dimensions: 2.3 x 0.8 x 1.8 inches (L x W x H). - To maintain optimal water freshness, clean the filter every 3-4 days and replace it every 2-4 weeks. This ensures a happy and healthy environment for your family and pets. - Important: Clean the filter with water before use. The foam filter should only be rinsed with water; detergents are not permitted. - Practical applications include regular home use to provide your pets with clean water, enhancing hydration at work, or ensuring fresh water during travel. Enjoy peace of mind knowing that your drinking water is free from contaminants and tastes refreshing.