Just put ginger in a place where cockroaches often haunt. If not, try.1; Put lemon juice in his usual place 2; Bleaching powder is in his usual place. At present, the commonly used effective methods are putting cockroach poison bait, spraying insecticide, smearing cockroach chalk, dusting powder, spraying insecticidal smoke and so on. , and choose to use according to the actual situation. In addition to chemical methods to kill pests, cockroaches can also be trapped and killed by physical methods such as sticking boxes and catching bottles. 1, radical measures, dirty sanitation, places where cockroaches are rampant. Therefore, doing a good job in sanitation and managing the environment are fundamental measures. To kill cockroaches indoors, we must first do a good job in hygiene, remove the habitat conditions of cockroaches, extensively carry out the activities of plugging holes and plastering seams, and remove the egg sheaths and cockroaches from their habitats. Cockroach marks refer to insect carcasses, residual limbs, corpses, wings, molting, cockroach excrement, empty egg sheaths, etc. "Eight inspections" refers to: one inspection table, two inspection cabinets, three inspection chairs, four inspection ports (sewer ports), five inspection pools (washing pools), six inspection boxes (food processing boards), seven inspection seams and eight inspection piles (coal piles, firewood piles and sundries piles). Cockroaches like to drill holes and hide cracks. Taking advantage of the living habits of pests, cracks and caves can be blocked with putty, cement or silica gel, so that cockroaches have no hiding place. For those kitchens with seriously damaged interior walls and outdated furniture, it is necessary to completely repair the houses and update the furniture in order to eliminate cockroaches. 2, reasonable spraying to kill cockroaches cockroaches often drill cracks and holes to hide, so when spraying with a sprayer, you must spray around cracks, holes and corners, so that the spraying effect is good and the medicine is saved. Cockroaches are reptiles. Don't spray them into the space and don't wear masks. Spray around. 3. Putting poison bait to kill cockroaches is a common and simple method, but if used properly, the trick is "less quantity, more points, more areas", that is, putting more poison points in a room, using less dosage for each point and distributing more areas. In this way, cockroaches can eat poison bait when they climb out of their habitat, and the killing effect is obvious. In order to prevent poison bait from failing due to moisture, it is advisable to put poison bait erbium particles in the bottle cap. Use chalk drawings containing pesticides in cockroach activity places. Around the crevices, holes and corners where cockroaches inhabit and often move, the word "well" is used to poison the powder marks smeared when cockroaches come in and out. The drawn road should not be too thin, it should be a thick line of 2-3 cm. 4, move to a new home, don't forget to kill cockroaches In recent years, urban buildings have mushroomed, and a large number of residents have moved into new homes. Warning citizens: When moving, please be sure to remove cockroaches and their egg sheaths hidden in old furniture, clothes, books, cartons and wooden cases, otherwise, cockroaches will soon appear in new houses. Cockroaches can't fly They spread through vehicles and luggage, parcels, furniture and other items, leading to regional and even international spread. Also: 1. Fresh cucumbers repel cockroaches. Put fresh cucumbers in the cupboard, and cockroaches won't come near the cupboard. After fresh cucumbers are put for two or three days, cutting them and continuing to smell them can also effectively drive away cockroaches. 2. Fresh peach leaves repel cockroaches. Put the freshly picked peach leaves in a place frequented by cockroaches, and the cockroaches will avoid when they smell the peach leaves. Onions can drive away cockroaches. If you put a plate of chopped onions indoors, cockroaches will run away immediately when they smell it, and at the same time, they can delay the deterioration of other food indoors.