Exposure to synthetic fiber clothing will cause naphthalene oil stains or brown stains. It is not easy to wash away.

When storing synthetic fiber clothes, it is best to wash them clean, dry and dry, and keep no sanitary balls.

If you put cotton and wool clothing together, you can use synthetic camphor essence or natural camphor pills and other insect repellents, so that it will not affect the strength and tensile strength of synthetic fibers.

Because they contact with the volatile gas of the hygienic ball, the fabric is easy to yellowing, and the "gold" and "silver" wires are broken.

Because the heat resistance of naphthalene in the health ball is very low, its molecules are moving away from each other at room temperature, and it changes from white crystal to gaseous state, giving off pungent flavour.

If it is put together with plastic bags with clothing, it will react chemically, causing plastic products to expand or deform or bind and damage the clothes.