Note: DO NOT just repel them or dump them elsewhere! That is just as irresponsible, inconsiderate, immature, and ILLEGAL as those that made those community-vermin garbage-cats into your problem. Repelling stray cats or dumping them elsewhere just makes them into someone else’s problem or our valuable native wildlife's problem. Everyone needs to become an adult for once in their sad and sorry spineless lives and solve it permanently. NO CAT that touches even one paw to my lands will ever become a problem for any other living thing on earth ever again. All my neighbors (and wildlife) thanked me greatly for this. I have effectively turned my lands into a 100%-fatal cat-trap for any cat within miles around. The eradication of hundreds of these vermin in the whole area (collared or not, for you must destroy all collared ones too, they are the very source of every last vermin feral cat) was so complete and effective that I’ve not seen nor heard even one cat for miles in OVER EIGHT YEARS now.