The most susceptible areas - in Burlington, Ocean, Monmouth and Sussex Counties - are to get the highest doses of an insecticide that authorities say does not hurt people or animals.
Native to Europe and Asia, gypsy moths have been a problem on the East Coast since some were accidentally released in Massachusetts more than 100 years ago.
Spraying programs seek to kill the moths in their caterpillar stage; that's when the can defoliate and kill trees.
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Information from: The Star-Ledger, http://www.nj.com/starledger
