Educate the community about cat care
Reach out to cat owners.
An important source of community cats is the population of unsterilized owned cats who are allowed outside. You can help reduce the number of cats who roam outdoors by providing educational material to adopters and community members, about the benefits of keeping their cats indoors and the importance of spaying and neutering and the need to put collars and visible ID on their cats. (Read more about the care essentials for owned cats.
Spread the word about Trap-Neuter-Return to cat caretakers. People with big hearts often provide food to community cats.
Unfortunately, they may not realize the importance of spaying and neutering. They may not even know that there's anyone who can help them. You can tell them about TNR and help them find organizations that can assist them.