Josh from Florida writes
the permethrin for the fast knockdown and the bifenthrin for longer residual and the IGR to break the flea and other life cycles. Or should I only use the bifenthrin. I dont want the two chemicals to work against each other and have negative results. Thanks
We would not recommend mixing Bifenthrin and Permethrin together. The Bifenthrin mixed with an IGR is effective as well as mixing Permethrin with an IGR, such as NyGuard. Nyguard does have a residual for 4-5 months. With fleas, keep in mind that multiple applications are needed for them to be eradicated. After the first application, a follow up treatment should be done every 14 days until the fleas are gone.
Answer last updated on: 06/17/2014