I've been in the IT field for around two years.
One of my colleagues (the 'senior') makes sounds with the keyboard and mouse. Those intentional 'tick-ticks' in a silent environment are annoying for me and for most of our team members.
I have already told him about this indirectly many times, but still there is no positive response.
He's one year senior to me.
Should I tell him to stop?
How can I do that politely?