A series of methods, such as spraying drugs, only treat the symptoms, not the root cause. You know, cockroaches are rampant because your dormitory has its living environment. As long as you cut off its survival foundation, cockroaches can be extinct or reduced.

Most species of cockroaches live in the wild, and only a few species live indoors. The latter is closely related to human beings. These species especially like to live in warm indoor places close to food and moisture, such as kitchen cabinets, food cabinets in canteens, kitchen walls and sewers. Cockroaches lurk at night and hide in dark and hidden places during the day; It is active at night, and its peak time is from 9 pm to 2 pm.

Try to keep the room dry and avoid indoor dead ends. In the cupboard.

Don't pile up odds and ends in the corner, don't give it a hiding environment, or buy paper that can stick flies and cockroaches and put it in an unavoidable corner. May I use a gasket? Or rearrange the filler so that it has no dead ends that cockroaches can't escape. Anyway, try to keep it dry, clean and tidy, and there are no hidden corners. Combined with some tools for catching cockroaches, these are small.

The trick can be Baidu.