Yoshinori Ishimi could hear a high-pitched whine coming from the apartment in Nerima Ward, Tokyo, he was about to enter. When he went inside, he saw black "mini-twister" clouds of flies.
The last tenant had been a 60-year-old divorced man whose body was not found until a month after he had died.
"Every time I encounter such scenes, I hesitate to step inside. But someone has to clean up these flats . . . and be professional about it," said Ishimi of Anshin Net, a cleaning service that is part of R-Cube Co. in Ota Ward, Tokyo.