Can someone tell me who to take my Featherweight 221 for help? I have done all I can to no avail. Thanks for any help.

I read this every day but not a poster. Now I need to know who can humanely capture a family of feral cats who now have taken over my back yard. I am a cat lover but these little guys need help I can't give. They seem to be about 8 mos old. What is that group that can help me? Thank you.