Hot summer days, the heat is hard to stop, and the cool mat sings the lead. However, in the use of mats, pillow mats, sofa cushions before, must do a good job of health treatment, mite removal work can not be saved. The mat often hides a tiny pest – mites, including mites and dust mites. The mite is a kind of spider invisible to the naked eye, it is a widely distributed parasitic mite, parasitic on insects that harm crops and is the natural enemy of these insects. The mite is not parasitic on human skin, but bites human skin when it comes into contact with people, causing dermatitis, mostly in cotton and cereal harvesters and packers, and also in people who get sick from using straw mats or straw mattresses. After being bitten, papules and erythema appear on the skin of the chest, back and extremities. The rash can be the size of a grain of rice to a soybean, with small blisters or blisters, itchy and unbearable, and can subside in 5-6 days. In addition, there are dust mites breeding in the cooler. Dust mites are very small, hidden in the dust and not easy to be found, generally not parasitic, do not bite people, feeding on human and animal body debris and nutritious powdered food. Dust mite excrement and body fragments are a very strong allergen, and some allergic people will develop allergic rashes, even sneezing, runny nose and induce allergic asthma after contact. Human dander and dust easily invade into the seams of the mat, plus the weather is humid, so that the mat mites are easy to breed and multiply. Therefore, it is necessary to do a good job to protect the mat from mites and keep the room ventilated to prevent “mat dermatitis”. Specifically as follows: when using the mat on a daily basis, you should scrub the mat, pillow seat and sofa cushion two or three times with water, and then scald it with boiling water to inhibit mites, and keep it dry. When you buy a new mat and before using it for the first time every year, you should repeatedly scrub it with hot boiling water and put it under the sun for a few hours, which can kill mites, bacteria and their eggs that are not easily visible to the naked eye. In autumn, this method should also be used when storing mats, and then put some anti-moth and anti-mold supplies to inhibit the growth of mites.