You tried what above solution? Using a delete query will not add code to a message - it is not an update query, but a delete query. If you have that code in the message, perhaps it is in your template or a modification is adding it.

Yup I ran the delete query. Not sure what the deal with the code was. It did not delete the 250k messages from guest, but that ok I am just reloading.

Thank you for your help.