I can provide some general information about refrigerating food to help you make an informed decision. Refrigeration can help slow down the growth of bacteria and extend the shelf life of many foods, including sauces. However, it's essential to follow the manufacturer's instructions and guidelines for storage and use.
If the label on your garlic sauce specifies that it must be used within a day, it's essential to adhere to those guidelines for food safety reasons. While refrigeration can slow bacterial growth, it may not guarantee the safety of the sauce beyond the recommended time frame.
Improperly stored or expired food products can pose health risks due to the growth of harmful bacteria, even if they don't show any obvious signs of spoilage. To ensure food safety, it's best to follow the manufacturer's instructions and use the garlic sauce within the recommended time frame.
If you're looking for a longer shelf life, consider freezing the garlic sauce in small portions. Frozen sauces can typically last for several months when stored properly in the freezer. However, always check the packaging or the manufacturer's guidelines for freezing recommendations for the specific sauce you have.
When in doubt about food safety or storage, it's best to err on the side of caution and dispose of the product if it has exceeded its recommended usage time. Your health and well-being are of utmost importance.