I have 6 pecan trees in my front yard(a corner lot) in Houston. I declared war on the squirrels 2 years ago that were claiming all the pecans as their own. I set out 2 live traps. One a havahart. the other is a squirrelinator. I trapped 17 squirrels that first year. Though one of my trees put out so many nuts that it broke several main branches.
So last year I didn’t set the traps out so often.
Traps are the way to go.
I've always said, you can't miss with a Havahart. ;)