From what the article says... It works. One minnow eats up to 100 larvae a day.

Just ordered 10lbs of minnows to go to work on about an acre of frog puddles up to knee deep, surrounding my yard.
Let's see... 300 minnows per pound x 10 pounds x 100 larvae = 300,000 mosquitoes eliminated per day. Should help.

We'll see how June goes. I'll let ya know.

https://beyondpesticides.org/dailyn...ase-density-larval-mosquitoes-ponds-114/