annabale 16, I made, some years ago, a cat ladder so my outside furkids can escape by going up on the roof, in case of any nighttime dangers appearing. It is always best to keep your feline family indoors, especially at night, if that is possible. But if is not, then I suggest that you provide some way for them to hide and be alone up high, in a tree or on the roof of your house or garage, or whatever you may have. As far as keeping any feral cats away from your brood, I don't know of any way of doing this. Yet, I don't think that their catching a disease from them would pose much of a problem. Have you thought of setting a trap for them, and at the same time keeping your pets out of it. I have a few ferals that come here at night and eat up what the others left over. However, I don't mind this. There is one with long fur, a white cat with gray marking on her. I wish she would become more friendly, so I could add her to my feline family.

..........wayne