Well, you've been feeding them. So now they're yours.
Stop feeding them and they'll leave.
@taramay:
I don't believe that. I believe she will find starving cats.
Same thing happened to my friend. She had two liters in her garage. Same cat. She found some homes but had to shoo them out.
If you can trap them, see if they can be fixed low cost and they will clip their ears and you re release for rodent control.
That is all I can help with sorry. It drove my friend insane.
4951