 Stop using the chemicals. Howard Garrett in the highly acclaimed Organic Manual explains in detail what to do instead. His what to do is the organic method. He recommends stopping the use of toxic chemical pesticides and synthetic fertilizer, but goes on in great detail about the practical alternatives. This is one of the few gardening books effective for use coast to coast and border to border. The best kept secret of all, uncovered in the Organic Manual, is that the organic program is better in every way.