Peter from Stettler Alberta writes
Tempo SC Ultra is not a contact kill product. It is a residual product that can take a few day to start killing insects. You need to give the product time to work. If the infestation of flies is extensive then you may treat again after 7-14 days. For more information on fly control, please read our article on How to Get Rid of Flies.
Answer last updated on: 05/29/2018