**2. Working methods**

This study was conducted in a university environment. The university is in Hammond and Westville, Northwest Indiana US. Data were collected through survey. The survey was a self-developed questionnaire adapted from a standardized resource online. Survey was reviewed by three experts, two health practitioners, and one safety specialist to validate the contents for the purpose of the research. The questions were presented in the form of Likert scale options. The IRB office of the university where the study was conducted approved the protocol before survey distribution. The survey was distributed via email to all students, faculty, and all the university employees. Four hundred and twenty-seven (427) participants, including 246 students, 109 university employees, and 72 faculty, participated in the study. Participants include 147 males, 270 females, and 9 people who preferred not to indicate their gender. All the participants took the same survey with the same preferences given to all. The research was divided into three parts. The first part is the questionnaire, research on appropriate solutions and redesign for appropriateness. The survey questions focused on the toilet's settings, design, user habit, and toiletries availability.
