I have a sign that says beware of dog and I don’t have a dog!!! Whatever it takes to keep these LOSERS away!!!
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No harm, no foul!
I believe any kind of sign gives a heads up to the thieves and could backfire in a bad way. Especially if they’ve scoped out the place. Beware of dog? How about poisoned meat thrown over the fence...or a brick? Even worse, they know you have no dog.
Got firearms? Everyone knows and they can bring their own.
I’d prefer criminals to be in the dark about what I may or may not have for home/self defense. I just don’t believe a sign is a deterrent. I don’t even advertise about burglar alarms. Let them be surprised!
My sign is a rusted old pickup at the top of the driveway. You don’t know how many neredowells are scared of old rusty pickups.
Your home security analysis is exactly what I’ve been taught by some family law enforcement. They say keep all manner of weapons/security measures quiet and never hesitate to use them if needed.