Scrub A Dub Industries Deck Care Co. does not typically specify a strict shelf life for its products because this can vary based on several factors such as storage conditions and usage. However, generally speaking, most cleaning and care products maintain their effectiveness when stored properly in a cool, dry place, away from extreme temperatures and direct sunlight. It is advisable to check the product labels for any specific storage instructions or recommendations. If a product appears discolored, has an unusual odor, or has separated significantly, it may be best to discontinue use. For the most accurate and detailed information, it is a good practice to refer to the information available on the current web page or contact the company directly if you have specific concerns about a product's longevity.