These crayons are made from special waxes and paraffin oil, using high-quality pigments to ensure strong, vibrant colour performance. They are designed to provide excellent writing ability on animal hides, remain stable across varying temperatures, and deliver intense, highly visible markings with good luminance. The ingredients used are safe for both humans and animals. After use, packaging and any unused materials can be disposed of as general waste. Any contaminated fabrics or surfaces should first be wiped clean with a cloth and then washed thoroughly using soap or detergent and water. When applied, the markings typically remain visible on the upper back of cattle and sheep for about four weeks, and on pigs for one to two weeks. However, markings on sheep can be difficult or impossible to remove, so it is recommended to apply them in more suitable areas such as the head or legs.