'''Depending on what/how much caused them to be sticky''' a hot damp terry washcloth should do the trick for surface sticky.
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'''Depending on what/how much caused them to be sticky''' a very hot but only damp (not soaking wet) terry washcloth should do the trick for surface sticky.
if you think something sticky was spilled onto them you could [https://www.ifixit.com/Answers/View/70691/Remove+a+key+for+cleaning|remove them] and was them in a dishwasher (top shelf only put them in a net lingerie bag). Air or towel dry them carefully after the wash.
''If this answer is acceptable '''please remember to return and mark it accepted'''.''
'''Depending on what/how much caused them to be sticky''' a hot damp terry washcloth should do the trick for surface sticky.
if you think something sticky was spilled onto them you could [https://www.ifixit.com/Answers/View/70691/Remove+a+key+for+cleaning|remove them] and was them in a dishwasher (top shelf only put them in a net lingerie bag). Air or towel dry them carefully after the wash.
''If this answer is acceptable '''please remember to return and mark it accepted'''.''