Rob from Mosinee, Wi writes
I don't want to waste product by applying too early but want to spray before the frogs and toads start appearing.
You do not need to apply insecticides such as Permethrin SFR before insects are active, which is usually when you get consistent daytime temperatures of about 55-60 degrees. If you tend to see overwintering pests like stink bugs or boxelder bugs, then keep an eye on your weather forecast and apply as soon as you get a jump in temperatures on a sunny day.
Answer last updated on: 04/08/2019