When do old requests get deleted from my pending requests?

I was looking for a sitter and sent a bunch of request, the time is past but the requests are still there. I am now a sitter myself and it is difficult to view my new pending requests with all the old requests still there. I know as a sitter I can archive those request but it doesn't seem I can do that when looking for a sitter. Do I need to message every sitter and ask them to archive or is there a way support can delete them?