To ensure fake urine stays effective, proper storage is essential. Quick Fix recommends storing fake urine in a cool, dry place away from direct sunlight. Extreme temperatures can alter the composition, so avoid leaving it in places like a hot car or in freezing conditions. For long-term storage, some users keep fake urine in a refrigerator, but it should be brought to room temperature before use. Properly sealed and unopened, Quick Fix fake urine has a shelf life of one to two years. By following these storage tips, you can maintain its quality for whenever it’s needed.