Depending on the type of custodian position, you may have to clean in the midst of daily business operations. The interviewer must ensure you are comfortable working in that environment and will represent the company well around customers.

"Yes, in the beginning of my career path, I worked in customer service for a few years. Therefore, I have no problem interacting with and being around customers or the general public while I work. Additionally, I am always extremely focused on the task at hand and my overall duty as a custodian so I don't get easily distracted by environments with noise or constant interruptions."