1, brought from the original house
Moving is inevitable. If there are cockroaches in the house where you used to live, you may bring them to your new home when you move, so the environment in your new home may be clean, but cockroaches are very viable. If you don't pay attention, you will bring them in.
Step 2 bring it in from the outside
If the things brought into the house from the outside contain cockroach eggs, then the cockroach eggs will give birth to many small cockroaches, and cockroaches have strong reproductive ability. Basically, as long as there are cockroach eggs, small cockroaches will breed.
3. The neighbor is coming.
Sometimes there are cockroaches in the neighbor's house, and there may be cockroaches in your own house. Cockroaches may enter through sewer pipes, air conditioning pipes, doors and windows. It turns out that there are no cockroaches at home, and many cockroaches are brought to neighbors' homes.
Cockroach killing method
1, onion
Slice or shred onions and put them on a plate where cockroaches often haunt. Cockroaches are afraid to come back when they smell excitement.
Step 2 put oranges and lemon peels
After the oranges and lemon peels are dried or dried, they can play a certain role in preventing cabinet cockroaches.
Step 3 wipe boric acid
Buy a pack of boric acid in the drugstore, dissolve it in hot water and wipe the floor. After drying, white boric acid crystals will penetrate into the cracks in the floor to prevent cockroaches and ants.