What is the shelf life of the products?
When stored dry the fertilizer materials have an almost unlimited shelf life. The Bio-tone microbes are best use prior to the 'Best by' date printed on the bag. If the material becomes wet during storage there may be some degradation of the nutrient value and the material may form clumps. You can still apply this material to your garden. Use a tool to break the clumps of plant food and allow it to dry as much as possible. Apply the product as you would the unaffected product.