I dont know if these are feral or not but htey have found you can atuclly control populations of feral cats by traping spaying and then releaseing back on your property if they dont want to breed cats can be very tertoral and if you have say 3 or 4 feral but fixed cats on youre property then they will most likely keep the rest of the cats off of it. It would probly work on stray cats as well as feral .
I trapped cats where I worked found homes for some but released two males back , they keeped the other stray cats away till they passed on. If you do this though you have to feed them other wise its not fair.
You can buy traps on line and I dont knwo about yorue feed store but mine not only sales live traps but they rent them.