Allinside 15L Dog Water Fountain Filter Replacement - 4 Pack Pet Fountain Filters with 5-Layer Filtration | Food Grade Activated Carbon & PP Cotton Filters for Large Dog/Cat Water Dispensers

["5-Layer Deep Filtration for Purer Water: Pre-filter sponge + double-layer PP cotton + natural coconut shell activated carbon + ion exchange resin work together to trap pet hair, food residues, and dust; eliminate chlorine/odors; Every drop is fresh, clean, and safe for daily drinking.​","Food-Grade Safe Material: BPA-free, non-toxic PP cotton and activated carbon ensure no harmful chemicals leach into water. Tightly sealed carbon layer won’t shed black particles, keeping your pet’s hydration free from contaminants.","Perfect Fit for 15L Pet Fountains: Custom-designed to match most 15L large-capacity dog/cat water fountains (check dimensions before purchase). Easy to install – no tools required. Simply soak in water for 5 minutes before use to activate filtration.","Long-Lasting: Each filter maintains optimal performance for 7-12 days (varies by pet count and water quality). 4-pack provides 1-2 months of use. Individually sealed packaging preserves freshness during storage.","Protects Fountain Pump & Promotes Hydration: Captures large debris to prevent pump clogging and extend its lifespan. Fresh, odor-free water encourages pets to drink more."]