1. Mi Chong: Mi Chong is a common cereal pest, which usually appears in cereals, rice flour and other foods. Their adult is a small beetle, usually only a few millimeters long, not more than 1 cm. Mi Chong are usually harmless to people, but they can destroy food. If you have rice and noodles at home, it may be that these foods are not well preserved, which attracted the arrival of Mi Chong.
2. Cockroaches: Cockroaches are common indoor pests and like to live in damp and dark places. Both adults and nymphs of cockroaches can fly, but their flying range is usually not very far. If you find cockroaches at home, it may be because of poor sanitation or some food scraps that attract them.
3. Other insects: In addition to the above two kinds of insects, other insects may also appear at home, such as spiders, mosquitoes, flies and so on. These insects may appear because of the environment at home or some plants that attract them.
If you want to determine the specific species of this kind of insects and want to eliminate them completely, I suggest you consult local insect experts or professionals of pest control companies. They can provide more specific suggestions and solutions based on the information you provide and the actual situation.