Randy from Millstadt, Il writes
Riptide is a contact kill only. Talstar P (Talstar One) lasts for 30 days outdoors. Mosquito Barrier can last up to a month. If you are looking for a product with the longest residual, we would recommend using Talstar P (Talstar One). Please let us know if you have any additional questions.
Answer last updated on: 08/06/2014