The term 'KEEP-IT-CLEAN ROUTINE' refers to a set of practices that promote good HYGIENE. The crossword solution for this term is 'HYGIENE', which is defined as the practice of keeping oneself and one's surroundings clean in order to maintain good health and prevent the spread of disease. Good HYGIENE practices include washing hands regularly, brushing teeth, taking regular showers, and wearing clean clothes. Keeping a clean environment is also important, as it helps to reduce the risk of infection and illness.