I do not have strays in my area. I do see a grey kitty every once in a while, but it might belong to someone.
Our new neighbors across from us have two indoor/outdoor kitties. I hate seeing them outside. One time I heard cats fighting and ran out to see. It was the tortie from across the street and the grey kitty (I think) got into it. The tortie actually let me pet her too. Then I see the orange guy begging at the window for them to let him in. I think they do stay inside at night. But still........... We live near a very busy road.