Per the manufacturer, the active ingredient in Eco-Mate ARMICARB 100 Fungicide is active no matter how long the bag has been open. If moisture gets in and hardens the material, all you will need to do is crush it back up, and it will be fine. They did not indicate a shelf life for this product. If y…
Read Full Answer »Eco-Mate ARMICARB "O" 100 Fungicide does not require the use of a surfactant. Â