My father doesn't clean his electric shaver, and it's quite dirty! I would clean it, but it grosses me out. Any ideas on keeping it clean?

I'm a guy and one of the guy things I do is clean my electric shaver every now and then. My dad doesn't do this chore anymore so his shaver gets quite nasty. I know I have to do it, but it grosses me out. It builds up with old skin, oils, hair. I have an assistant that helps out, but it's not a task she's taken on. How do others handle keeping the shaver clean? Alternate methods for keeping him shaved and clean?