Jal from Scottsdale, Az writes
Once you mix Onslaught FastCap, you will need to apply/use the mixed solution within 24 hours. Only mix when you are ready to use within that time. The bottle of product in the concentrated form will have a 2-3 year shelf life (if stored away from extreme temperatures) from the date of purchase. Applications of the product are once quarterly to the interior listed areas on the product label and monthly to the exterior of the structure.
Answer last updated on: 02/10/2016