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Step 1
Chase the strays out by opening all the doors and windows, but keep the inside door to the basement stairs closed if you have stray cats in the basement. Run through the basement with a loud noisemaker and shout to run the cats out. For crawl spaces and under porches, use a hose to run off cats.
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Step 2
Make sure all cats have been chased off, then immediately fix up any openings into basements, garages or out-buildings including holes or cracks in doors or broken windows. Use heavy hardware screen to block off openings to crawl spaces or under porches.
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Step 3
Use a chemical repellent around the perimeter of structures to discourage cats from coming back. Consider placing at least one or ultrasonic repellent units outside or more units if you have outbuildings (see Resources below).








