How often do you clean your mobile phone?

One of my staff was let go today and she had to turn her work phone in, it's maybe 6 months old and was the most disgusting thing I've seen in a long while. This woman is a Nurse and her phone and it's case were covered in body oil, makeup and what I can only guess is food? I put on some latex gloves and removed the case and threw it out then wiped the phone down with alcohol wipes before turning it in to IT. I clean my screen at least once a day and take off the case and clean it too at least once a week with hot, soapy water and a brush. I do this with both my personal and work phones. How can people live with disgusting filth like this, specially a Nurse ffs??? 😖