Chris from St. Louis, Mo writes
You never want to mix up any more product than you plan to use at a time when you are doing an application, whether it be Exponent Insecticide Synergist and Bifen IT, or other products. No chemicals should sit in a spray tank for longer than about 24 to 48 hours to ensure maximum effectiveness of the chemical before it starts breaking down, and to avoid unnecessary wear on your sprayer parts.
Answer last updated on: 01/31/2016