Tuesday September 25, 2012
What is the main difference between Onslaught Microencapsulated and Onslaught Fast Cap? The label for Fastcap says the target pests are spiders and scorpions, but we like the Microencapsulated for fleas. How will it compare for fleas? Should we switch or stay with the original, and why? Thank you
Onslaught Fast Cap is still a microencapsulated formulation, so if that is a major consideration then either product still fits the bill. The difference is in the active ingredients. The original Onslaught contains only the pyrethroid esfenvalerate, which is a perfectly good active. But, according to the manufacturer MGK, they felt there was a need for the long residual and effectiveness of the microencapsulated pyrethroid along with a faster knockdown, and they specifically target spiders and scorpions in their product features. To do this they added another short-lived pyrethroid called prallethrin as well as the synergist PBO, which you find in nearly all pyrethrum formulations. These last two may be free materials within the Fast Cap concentrate so that they are available immediately to contact and affect the targeted pest, giving that rapid knockdown. The kill of the pest is then accomplished for sure with the esfenvalerate.
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Please note, Mr. Pest Control is answering questions supplied by PMP customers across North America. His answers are generated from industry and manufacturer-provided information. The answer may not be specific to the laws and regulations for your State, Province, Territory or Country. In addition, products mentioned may not be registered and or available in all areas. Always check with your local Univar office for specific information to your area. Always read and follow label directions.