Kerry, I just found this thread of yours.
My respect and applause:
You are doing
everyone a favor:
• Your neighbors (their attics...)
• The pellet manufacturers
• Your airgunning buddies on the forums (we get to enjoy your reports)
• Yourself (your attic, and your entertainment).
I have similar problems with my own pest animals (pigeons). This year is the worst, they seem to know exactly WHERE lead poisening is awaiting them — and simply avoid those spots.
When a new batch of freshly hatched pigeons arrives, they act as dumb as their gargling sounds — but just for a few weeks.
Then they're all dead (by pellets, feral cats, and falcons) — or they wised up and roost elsewhere.
Keep up the good work.
Matthias