I haven't heard of any "home remedies", but there are a few products on the market to kill moss. Garden's Alive makes an "environmentally responsible" one that can be brushed on. It's safe for use in gardens.
http://www.gardensalive.com/pr....
Bayer also makes one:
http://www.bayeradvanced.com/l.... Not sure if this can be used in the garden.....
