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

Just amazing! My birdbath stays cleaner so much longer now. I was scrubbing with a stiff brush every other day to clean out the algae growing on the bottom. It wouldn't even just rinse off. Now I scrub it once a week and there is no green algae. This is just a must for all birdbaths. They should come with them!

Idéal pour la fontaine

Works well in the bird bath. Keeps water clean. I rinse out the bird bath a few times a week, and there is no slime. Would highly recommend.

I bought 2 of these even though I was skeptical about how well they would work. In the 3 months we've had our one foot high glass birdbaths out (one mostly shaded and one in full sun), I've only had to clean them once, and that was because a storm blew a ton of dirt and mulch from the flower beds into them. I dump the water when I see bugs or other debris but the water has stayed so clean I usually just top it off as I'm watering. I'm also better at keeping them filled because I don't have to clean them so often. As for the copper discs, those have also stayed remarkably clean. I've wiped them down once, and the only algae or pink slime I saw were in the divots made from the nubs on the bottom side. Our 3 feral cat family members also approve. I put fresh water out for them every day when I feed them, but they usually drink from the shaded birdbath instead. The sparrows from across the street have to use one of the cat's two water dishes since the cats called dibs on their birdbath, but it works for them. I would highly recommend these to anyone who dreads the chore of cleaning gross birdbaths.

Works like a dream, keeps the water in my bird bath crystal clear!