Question: what is the best way to kill black widows?
Answer: Zenprox Aerosol - Botanical/Pyrethroid, quick kill and residual with 360 degree valve(for upside down spraying), dries dry instead of oily. Stryker 54 Contact Spray - This pyrethrin aerosol spray is used for killing black widow spiders on contact and flushing them out of hiding places.