Annoying & creepy co-worker

We got one at our workplace who is constantly hitting on the women, especially the new ones, but does it when he is alone with them or else in a subtle way.
One of the older employees, that had been there a long time, had enough. She was in the basement cleaning out the washing machines. She had a load of gunk and when he tried to get up close to her, she pulled forward his scrubs and dumped that down them. After that he got the message.