Answer: mothballs

AnswerCrossword Clue
MOTHBALLSNaphthalene in our home chemistry set
MOTHBALLSPuts in storage
MOTHBALLSProtection for clothes
MOTHBALLSWhat some warships are in.
mothballsMOTHBALL, to treat for storage
mothballsA small pellet of a pungent substance, typically naphthalene, put among stored clothes to keep away moths