Several Seattle bar owners who received anonymous letters threatening to poison customers with highly toxic ricin called the matter creepy but doubted it would hurt business.

"I don't think this community is going to be scared to go out," said Carla Schricker, owner of Re-bar, one of 11 gay bars that were threatened in the typewritten letters.

Still, Schricker and many others have posted signs warning customers not to leave their drinks unattended. They also have asked staff to keep an eye out for suspicious behavior.

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