Does your water bottle only get washed once or twice a week -- or even less? Time to switch things up: Even a day or two without washing can encourage the growth of unhealthy germs in the average ...

Industrial Research Institute of Nonwovens & Technical Textiles, Shandong Center for Engineered Nonwovens, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, P. R. China ...