The influence of environmental and biological factors on the efficacy of Bacillus thuringiensis serovar israelensis and B. sphaericus as mosquito larvicides are reviewed. The importance of strain dependence. cultivating media/methods. https://www.roneverhart.com/Medline-ReNewal-Reprocessed-Arthrex-Scorpion-Needle-AR-13995N-MULTIFIRE-SCORPION-NDL-BLACK-AR13995NR/