when a neighborhood cat started coming into our backyard with her kittens, we finally let her stay in the garage at night. then into our house. when the two girl kittens were old enough we took them to our Vet and had them fixed. $300.00 each!!! the mamma had another litter (the dad snuck into our garage!) and after she had weaned the babies, we took her to a planned pethood place to get her fixed. couldn't afford another $300.00 if she didn't want to stay with us in the end.
but she did and we have 3 cats and love them all. i feel bad having taken her to that planned vet place. it was horrible. so noisy with kids running everywhere and she was so frightened when we took her home.