No.

Watering the droppings in, or raking them out, is about the only thing you can do.

You could tie bird scare in the trees.(reflective tape) I used it before on the patio cover to keep them away and I use it on the fruit trees and grape vines

I guess the bird tape is going to have to do. I was hoping some red worms or something like would do it. Supposedly we do have worms here in AZ, but they must be really deep because I have never seen one.

I have earth worms or red worms every where but I use steer manure everywhere