Chad writes
Per the product label for Surf-Ac 820 Non-Ionic Surfactant when used with insecticides you would use 1-2 pints (16-32 oz) per 100 gallons, this breaks down to approx 0.16-0.32 fl oz per gallon of water.
Bifen IT does not require the use of a surfactant unless you are treating for eriophyid mites or spider mites per the product label. Adding one for other insects would only increase the residual for a few days on outside surfaces.
Answer last updated on: 04/08/2024
