Erva Bird Bath Purification Disks, Copper, Pack of 4 purple martin bird house 5" thick plastic and contrasted

5" thick plastic and contrasted by an arched

while their UV stabilized

mechanical motif

Included keys keep the telescoping sections securely in place

Erva Bird Bath Purification Disks, Copper, Pack of 4 purple martin bird house 5" thick plastic and contrastedKeep the water in several bird baths free of algae and microbes with these 4 Erva Copper Bird Bath Purification Disks. Package of 4 thin, 3. 875" diameter copper disks, each designed to sit in an existing bird bath. Copper has been proven to eliminate bacteria and viruses, great for disinfecting standing water. This metal affects microorganisms on an ionic level, for a lasting source of water purification. Three small nubs on the underside of each