3-Pack 99.99% Pure Copper Bird Bath Cleaner Disks – All-Season Water Purifier

All-Season 99.99% Pure Copper Bird Bath Cleaning Disk – 4.21″ Universal Fit

99.99% Pure Copper Bird Bath Disk: Universal Fit for Clean Water All

All-Season 99.99% Pure Copper Disk for Effortless Bird Bath Water Purification