Dora from Owasso Oklahoma writes
Viper contains cypermethrin which is known to be very good for killing spiders. Brown recluse spiders are a bit trickier to eliminate because they often stay hidden in areas where people do not or cannot spray. We recommend that in addition to the Viper, you also use glueboards in areas where spraying would not be appropriate and to help monitor the infestation (cabinets, closets, under furniture, storage areas).
Answer last updated on: 04/25/2013