ok if a person has expensive teeth whitening trays from a dentist and drops one in the toilet...?

.....then washes it a whole lot and soaks it in alcohol then lets it completely dry and then washes it with soap again, is it ok to put it back in the person's mouth?
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you should get one of those machines that heats stuff up and kills off all the germs. i guess i am not fancy enough to love its name.
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