How does a wool rug have a good anti-mite effect?

Ways to prevent wool worms:
1 Keep the carpet clean and dry. After the carpet is used for six months, it should be moved to the outside and knocked off the dust, air-dried, but not exposed to the sun. When the carpet is re-applied, the floor should be cleaned.
2 After the carpet has been used for one year, clean it with chemicals.
3 If the carpet is laid on a wooden floor, it is best to wax the floor first. After two or three days, spread a layer of sanitary balls and then spread the carpet.
4 When storing carpets, spread a sanitary sphere evenly around the carpet and wrap it tightly around the ventilated area. The best place is half a meter from the ground.