First, it is dirty and nasty creatures.
Second. Cockroaches as carriers of diseases such as dysentery, cholera, skin diseases, food poisoning.
As many germs like bacteria, viruses. protozoan parasites and fungi.
Third, clothing destroyed by cockroaches. They are often spread by a wardrobe and a pile of junk
Fourth, they have always put eggs scattered
Finally, because it has a lot. It is difficult to eliminate. Removal and then back again.