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Brian writes

When would I choose deltamethrin over bifenthrin, and when would I choose bifenthrin over deltamethrin?

Does it depend on the insect I'm fighting? Is one better for mosquitoes versus spiders, etc.? Indoor or outdoor?

Answer:

The only advantage to using a Bifenthrin based product such as Bifen IT over a Deltamethrin based product such as Suspend SC, is that it is known to be super gentle on most plants (do not use on edible vegetation) and is virtually odorless while Suspend Sc does have a slight odor.  Both the Suspend SC and the Bifen IT contain synthetic pyrethroids for active ingredients and will provide very similar results.

Answer last updated on: 06/19/2014

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