The shelf life of sauces varies depending on the type, ingredients,, and how they were prepared. Generally, most condiments like ketchup, mustard, or BBQ sauce will last up to 6 months if stored in an airtight container in the refrigerator. For example, soy sauce can last up to a year due to its high salt content which acts as a preservative. On the other hand, if you are using homemade sauces like salsa or pesto, it is best to consume them within 2-3 days when they are still fresh and flavorful. Additionally, it is important not to keep any opened bottles that have been sitting out at room temperature for more than two hours as this increases the chances of bacterial growth due to warming temperatures. Furthermore, always check for signs of spoilage before consuming sauces such as changes in texture/odor or discoloration before use!