What should I do if cockroaches appear a few days after I use cockroach medicine at home?

1, washing powder. It is an efficient drug for trapping and killing cockroaches, and its effect is even better than that of some chemical pesticides. The way to do this is to scatter washing powder in places where cockroaches may haunt, and if you eat washing powder, you will die.

2. Hot soapy water kills cockroaches. Adding a bar of soap to 4 liters of hot water, dissolving it and spraying it directly on cockroaches can effectively kill cockroaches.

3, soda cockroach method. Mix sugar and baking soda in half and put it in the place where cockroaches infest. After about 3- 14 days, cockroaches will disappear.

4. Boric acid mops the floor to prevent cockroaches. After dissolving a proper amount of boric acid in hot water, wipe the floor with a mop or rag. After drying, white boric acid crystals will penetrate into cracks in the floor to prevent cockroaches and ants.

Extended data:

To eliminate cockroaches, we must first ensure environmental sanitation, clean up in time, including toilets and sewers, and clean up garbage in time. Don't leave a sanitary corner at home, don't put food in the open air in the kitchen, don't leave stagnant water at home, and block the gap in time to prevent cockroaches from breeding. Check carefully, even the old computer case. People living in a building had better act in unison, so that cockroaches have nowhere to hide.

Like other insects, the activity and reproduction of cockroaches are affected by temperature. In general, the seasonal fluctuation of cockroaches is the change of population or community quantity caused by temperature change.