Cockroaches are the most disgusting insects. "No matter how clean you keep your kitchen, you find one or two every summer in Japan." says my student. She told me that you wouldn't see one unless you live in a very dirty place in her country. The first one she ever saw was in Japan. She said she took pictures of it at that time as it was new to her. But now she has lived longer in Kyoto, she screams when she finds one in her kitchen. She is well Japanised!!