Hi, i appreciate your site… it is very informative.  Read your spider control article and have a question regarding deltamethrin and Lamda-Cyhalothrin.  Are there any particular differences between the two?  For example, is one better suited for a specific type of treatment/insect… or are they about the same?  We plan to spray the interior of our house with one of those (were thinking cyonora), and use a dust in our crawl space.  Our main concern is reducing the number of brown recluse spiders.

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