Your probation officer will likely receive a report from the Ignition Interlock Company. You should meet with a lawyer to discuss a possible revocation of your probation.
You need to notify your PO immediately. While I would like more information to better qualify this answer, in my experience one violation of this type does not generally result in a revocation. It may occasion some lesser penalty or loss of time; but I would be surprised by a revocation. However, failure to report this will likely have a very negative impact. It would be better for you to advise your PO than the IID people.
Notify your PO yourself. That is generally much better than having the news come from another source. Explain yourself as you have here.
Christopher I. Simser, Sr.
Syracuse - Albany - Rochester
If you lie to your probation officer or fail to inform him it will be worse. The mouthwash story is something he has heard a thousand times so if it is not true do not insult his intelligence with such an obvious story. Id he likes you he will not even violate you and if he does the judge may just not allow the early release. If you are on an interlock device you should have known that any mouthwash with alcohol could effect it, but somehow I doubt that it was the reason here, but who knows, maybe it was. Either way it was a huge mistake and it may cost you the early release but probably not a jail sentence.
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