If in doubt, keep them out - that's the message from States of Jersey Police to remind islanders to be aware of bogus callers.
Most people who come to the door are genuine, but sometimes people turn up unannounced and try to trick their way into your home to steal valuables or money.
These are known as distraction burglars and bogus callers.
Detective Sergeant James McGranahan said: "This kind of crime is extremely rare in Jersey but it is our job as Police Officers to remind people of any potential threat. This is why we regularly give out crime prevention messages like this to make islanders just that bit more careful.
"As we have said most people who come to the door are genuine, but it never hurts to check out who someone is and if you are concerned let us know.
Islanders can follow simple steps to stay safe.
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