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There are easy things that you can do to live in harmony with the cats who have made their home in the neighborhood. Alley Cat Allies provides a list of natural cat deterrents and repellents and easy ways to modify the feral or stray cats’ behavior.
Not everyone wants cats playing in their yard or digging in their garden. Keeping the cats away from areas where they're not welcome is an important way to maintain good relations with the neighbors. Neighborhood Cats has some excellent ideas to help.
Domestic cats, feral cats, and homeless strays may wander into your yard or garden due to curiosity, mating, hunting, feeding, and establishing territory. Some may be looking for a new place to call home. Since cats have incredible climbing and jumping abilities, keeping them out of your outdoor area can be challenging. The Spruce offers some good suggestions.