I'm not sure what advice to give. If the cats remain unspayed they'll produce kittens that produce more and so on. The males that are unneutered will kill kittens to drive the mothers back into breeding.
If you could find people who love cats you might try getting the kittens/cats homes that way. You could try a no kill shelter or maybe try to help him find spay/neuter assistance?
If you could find people who love cats you might try getting the kittens/cats homes that way. You could try a no kill shelter or maybe try to help him find spay/neuter assistance?