They must go to the Post Office to Sign for the letter and pick it up. If no one picks up the letter after 5 to 7 days, USPS will leave a second delivery notice. Again the delivery slip reminder is left by the letter carrier. Finally after 5 to 7 days the third and final delivery attempt is made to the delivery address.
Gamma-cyhalothrin is a single stereoisomer of the pyrethroid insecticide cyhalothrin, and as such shares physical, chemical, and biological properties with both cyhalothrin and lambda-cyhalothrin, which are mixtures of 4 and 2 isomers respectively.
Demand CS - lambda-cyhalothrin 9.7%. Demand CS, by Syngenta, is a general multi-purpose insecticide. Demand CS is a pyrethroid insecticide in a microencapsulated water-based formulation. This microencapsulation not only gives you a longer residual, but there is no stain. Demand CS can be applied at low concentrations, so you have less pesticide exposure.