Mormon Missionaries what can i do to help them?

Hi, I see the Mormon Missionaries are back in my nighborhood. I feel so incredibly sorry for these young gentlemen that are riding their bikes in the nasty weather soliciting their religion. I DO NOT agree with the words of Joseph Smith, however I do want to help the young people achieve whatever there goal is. Do these missionaries have a "Goal" to challenge that they must achieve or is there anything I can do to help them?