Craig, 

Yes, those small frogs can be quite loud!!! 

Unfortunately for you, maybe not so for the frog, it is breeding season so the males call out to attract females.  The season will end sometime, depending on the species of frog, so waiting it out may be your best bet.

Not knowing the species of frog it is hard to say what natural predator might be helpful, but birds and snakes will eat frogs.  Maybe your ducks can help out!

Here are a couple of frog related websites:

http://blogs.ifas.ufl.edu/lafayetteco/2017/09/25/frogs-the-good-the-bad-and-the-ugly/

https://www.nps.gov/articles/northern-leopard-frog.htm#:~:text=Northern%20leopard%20frogs%20breed%20in%20permanent%20pools%20in%20rivers%2C%20streams,pools%2C%20ponds%2C%20and%20wetlands.&text=Breeding%20generally%20occurs%20from%20mid,female%20from%20a%20breeding%20pond.&text=Release%20of%20the%20eggs%20stimulates,and%20the%20eggs%20are%20fertilized.

Maybe investing in ear plugs is a good bet as well.

Good luck, 

CMG of Boulder Co.

I don't have any research based information that vinegar, salt or coffee grounds are effective in repelling frogs.  They would be cheap and easy to try.

Habitat modification would help get them to move on.  Food, shelter and water are three of the four elements all animals need to survive.  They need moist areas and insects to survive.  You can keep vegetation around the pond cut so that it does not provide the moist habitat.  You may need to remove the rocks that they like to hide in or at least place the rocks in a way that it doesn't provide a hiding place for them.  Since you have ducks, you can't fence the area off to prevent access to the pond.  You could add some fish to the pond.  The fish will eat the tadpoles or the frogs depending on the size of the fish and the frogs.  Putting in an aeration or water movement system may help by providing water movement which they don't like but it also helps the tadpoles survive.  If you aren't using BT to manage mosquitoes, this will remove a food source.  Keeping vegetation managed around the pond reduces the number of insects which is their food source.  You can also drain the pond for several months to get them to move.  Once you refill the pond, they may return.

If everything else fails, you can hire an animal control contractor to remove them.  However, if you still are providing the food, shelter and water, they can return.

Let me know if you have further questions.

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