How Do You Keep Ducks Out Of A Pool?
I have no scientific proof or documentation that this will work, but several customers have told me that they get good results by having several inflatables–the alligator is a favorite–floating in the pool during the day! Worth a try if those darling little fowl have adopted your pool as their new home. – Debbie

Have had problems with ducks in the pool.Seems to be seasonal and they use it when we dont.The only problem is what they leave behind,as it stains the sandstone flagging surrounds.Have tried inflatable crocs,snakes ect to no avail.We have just bought a commercial product to add to the water.Fingers crossed