Before attempting a pest control method that may prove to be unnecessary, ineffective or complete overkill, the first step a gardener should take is to correctly identify the problem. Positive identification of garden pests paired with the appropriate intervention will yield the best results while minimizing or eliminating negative impacts. My guest this week, Susan Mulvihill, has penned a new book on solving common pest problems that will arm you with all the information you need to make the right control decisions.