I heated a hotdog on silver foil in a clean Milchig toaster convection oven with a glass door. How do I Kasher it?

The toaster oven should be thoroughly cleaned, and to be put on to the highest setting for an hour.

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ע״פ שיטת אדמו”ר הזקן באו”ח סי’ תנ”א סעי’ י”ג הגהה.