Has anyone tried placing hot hands super warmers on their carb overnight?

 

to find out what jets are in your carb you have to remove the floatbowl. remove the bowl, the main jet is in the center(under the brass bolt in the bowl and the pilot/slow jet will be just to the right of that facing the carb. unscrew them and remove and read the numbers printed on them.
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why even go through that if the hot hands super warmers work?
(rationale being: carb is warm, bike starts fine, carb is cold, bike has trouble starting = warm up the carb)