Mothballs are effective in getting rid of pests because they contain powerful pesticides designed to repel and kill. Mothballs give off dangerous fumes that kill moths and other fabric pests due to the high concentration of chemicals.
Mothballs should be kept in airtight containers away from children and pets, due to their potential for causing harm. If the container is not airtight, fumes can escape and lead to dangerous consequences for people and animals from continued exposure.
Mothballs are not intended for outdoor use, due to their high potency and ability to cause damaging health consequences. They can poison pets, soil, water and plants, and therefore should not be used in gardens or other outdoor areas.