Mellbree Bird Bath Copper Disk 0.6mm Reinforced 99.99% Pure Copper Cleaning Disk with Triple-Point Support for Physical Safe Clean Water All-Season Universal Fit for Outdoor Birdbaths Bowl

Natural Water Purification without Chemicals: The 0.6mm thick 99.99% pure copper bird bath disk naturally purifies the water in your bird bath. Upon contact with water it forms a Patina protective layer a technology used in the Statue of Liberty Registered with the U.S. Environmental Protection Agency (EPA) (Reg. No. 82012-1) confirming its safety and effectiveness.