birth control for pigeons

[flockopigeons]

I have been feeding a flock of about 100 for over 30 years. My neighbors , bless them, have been very understanding but about 2 years ago a new neighbor arrived who really hates the birds. He had shot, poisoned, trapped them etc. Many years ago a product came out callen Ornitrol for pigeon birth control but the FDA halted it. About 1 year ago I heard on the news there is a new product for pigeon birth control but I don't know how to get it and if any government agencies will help in the cost as I these are wild birds and I have a set feeding station. Anyone know anything about this in the Los Angeles area?