I'm finally having some success controlling them using the pellet gun. The problem is how to get a safe shot in a suburban neighborhood without causing issues with neighbors. They seemed to be spending time in my front yard exposed to the street and neighbors rather than my back yard where I can get a safe hidden shot. I did take one from my back deck, but that was it.
I finally figured out was they were doing. They are crossing the street from a neighbor's yard that has big oak trees. I have a large pine next to my house with branches that extend into the front of the house. They are now spending time in my ornamental crabapple in the front yard. When I come home in the car or folks walk down the street and show any interest in them, they obscure them selves in the pine boughs that touch the crabapple then go back to feeding on the crabs when they think it is safe.
I finally realized that one of our guest bedroom windows is the perfect perch. It is obscured from the street pretty well by the pine boughs but I can easily look up and down the street to see that no cars are coming, no one is out for a walk, and no kids are playing in the street. From this elevated position, I have a good backstop for each shot and because I'm indoors the squirrels ignore me. I generally wait until they are on the ground or in the lower part of the tree. Because the pellet gun is completely indoors, it is dead quiet outside. If I shoot and miss, the squirrel just scampers a couple yards, looks around, and goes back to feeding.
I had 3 in the crabapple last evening and dispatched two. The third finally retreated back across the street before I could dispatch him. I finally think I have a good working solution (at least while the crab apples last!). So far, I've dispatched 5 this year and I know there is at least one more using my house/yard/decks.
Thanks,
Jack