Magdolna from Nh writes
Permethrin SFR 36.8% should only be applied once every four weeks. It does take time for the product to work after applied. It would also be a good idea to incorporate an insect growth regulator (IGR) such as Archer IGR for complete control of ticks. All of these products are pet safe if used as directed. Pets need to be kept out of the area being treated during application and until everything is completely dry. Please look over our Tick Control Guide for more information on treating and preventing this pest.
Answer last updated on: 06/01/2019