To prevent cracks in the natural material of the drinking horn with Fenrir engraving, the item should not be exposed to moisture for extended periods and should be allowed to dry completely with the opening facing downwards after use. Clean the horn exclusively by hand with lukewarm water, mild dish soap, and a soft bottle brush, as extreme heat in a dishwasher or prolonged soaking will cause the material to swell. It is also recommended to occasionally rub the outside of the horn with vegetable oil to keep the surface supple and to protect it from extreme temperature fluctuations and prolonged direct sunlight.