Replacement Filters for MAKESURE Pet Water Fountain, 12 Pack

This product includes 12 replacement filter packs, a brush, and a water inlet pipe. It uses a four-layer filtration system to improve water quality and taste for pets.

• The description claims that each drop of water is filtered through a four-layer filtration system to remove impurities and improve water quality.
• The description claims that the system includes activated carbon, ion exchange resin, and high-quality cotton for filtration.