The Japanese 4-Minute Method for a Spotless Home Keeping your home or workspace clean doesn’t have to be overwhelming. In 1985, Hiroshi Tanaka discovered a simple, yet transformative, cleaning method that anyone can adopt. The Japanese 4-minute cleaning method is a game-changer, blending efficiency, mindfulness, and practicality. Whether you’re a busy professional or simply looking for a stress-free cleaning routine, this approach can make a world of difference.