1, soap and water kill cockroaches. Apply some soapy water to the surface or wall where cockroaches often appear. The grease in the cockroach's stomach will dissolve as soon as it touches soapy water, and it will not move for about ten seconds, which is more effective than pesticides.
2. Washing powder kills cockroaches. Find a piece of paper with the right size, sprinkle washing powder on it, and sprinkle some sugar water to attract cockroaches. Put it in a place frequented by cockroaches, and you will die if you eat washing powder.
3, soda cockroach method. Prepare sugar 1 platter and baking soda 1 platter. Mix sugar and baking soda. Then stir well. Put it in a place where cockroaches haunt, and after about a week or two, cockroaches will disappear without a trace.
4, onion cockroach removal method. Buy some onions from the vegetable market and cut them into slices or shreds. Put the chopped onion on a plate and put it in a place where cockroaches often haunt. Cockroaches are afraid to come back when they smell excitement.
5. Boric acid mops the floor to remove cockroaches. Buy a pack of boric acid in the drugstore, take a proper amount of boric acid and dissolve it in hot water, wait a moment. Then wipe the floor with a mop or rag dipped in dissolved boric acid. After drying, white boric acid will penetrate into the cracks in the floor after crystallization, which can prevent cockroaches and ants.
6, homemade potato boric acid cockroach medicine. Take boric acid with the same volume as potatoes, mash the cooked potatoes, mix them with boric acid, and then knead the mixed boric acid mashed potatoes into pieces and put them in places frequented by cockroaches.
7. Lemon repellent method. Add lemon juice to clear water to make lemon solution, put it in a watering can, and spray it when it meets cockroaches, thus successfully expelling cockroaches.