.

Bad idea. Let me ask you this: Did the wildlife exist prior to your meddling with the ecosystem? Leave it alone. Let them be WILD, please.

The mosquito tablets (actually donut shape) work great. One donut should last a month. It doesn’t hurt animals. We used them in our livestock drinking barrels for the wildlife in the area at our ranch years ago. It keeps larvae from developing. I think it’s an enzyme of some sort.

I know little about birds. You must be attracting some dirty birds leave muck behind? Typical year I find 2-3 nests in bushes and trees. I've sort of given up on my blueberries. Used to grow them up north the birds would at least wait for them to ripen. Florida birds, perhaps why they are dirty-birds eat them green.,

For what it is worth koi are fancy carp. Many carp in lakes and ponds were purchased as gold fish at pet stores. Kill mosquitoes? With proper care. Proper being no care, the fish keep the insects in balance.

Most carps In United States are European and Asian. Farm ponds can be mix depending on how the got in there?

Which can first birds or Neanderthals?

Love having a bird bath. They come close to be viewed. I empty the water every day. Shallow pans are better and I put smooth river rock on the bottom allowing butterflies to get water too. Use regular water with some hydrogen peroxide to clean with a brush. The peroxide will not harm the plants. I have a separate small bowl for the donuts. I would only use clean, unadulterated water for the birds.

I can't help it. I'm a meddler. :wave:

For my bird bath I use a solar device called a Water Wiggler, which I purchased on Amazon. It spins creating a slight ripple to the water surface. This ripple keeps it mosquito free and it doesn’t frighten the birds.

Thanks to all who replied. Because my garden hose would have to be dragged out 65 feet every time to clean it I've decided not to get a bird bath.

In some areas they may need help due to bulldozer. :oops:

YOU don't make sense!
 

Birdbath
 

Our home is very close to neighbor. Our neighbor has a birdbath, bird feeders and feeds squirrels about 10 ft from our birdcage. The squirrels have chewed our plastic drain pads under gutter spouts, climbed up gutter spouts and chewed 2 large holes in our birdcage screens and dug up my gardens to hide peanuts she feeds them. We asked nicely last spring to please not do this as expensive damage to our home. Reply was how much she loves the birds n squirrels. Please be kind to your neighbors. Our neighbors could move their feeding area to side of home not near us or other neighbors but chooses to let us constantly pay to fix damages to our home./QUOTE]