Moss Control in Lawn

[bigdog]

Looking for advice and suggestions.....
I have moss, creeping into part of may lawn, especially the 'backyard area closest to the woods, that has a lot of shade.

In the past I was able to control (somewhat), the moss problem.with 'moss killing' powdered product, but currently unable to find at Lowes or Home Depot.

Where can I purchase this type product? Also, are there home-created concoctions that can produce the same results?

Thanks for your feedback !