Brian from Lower Merion, Pa writes
What is the half-life of this product? Will it leach and be harmful in our drinking (well) water, pond or streams?
We do not recommend using Permethrin SFR 36.8% within 25 feet of a water source souch as a pond or stream. When using the product topically on the soil surface there should be not be any issues with well water unless your water source is close to the top of the soil. Should you be using this product for a termite treatment within 10 feet of a well we would recommend using the back fill method. Which is dig out the soil and treat the soil, and return it to the area treated not by pouring the product in trenching. Anything within 5 feet of the well we do not recommend using for termite treatments.
Answer last updated on: 04/17/2017
