I think you can wet the moss over & over again as long as the moss doesn't get peed or pooped on by the snake then it's good to stay in there. I'll post some links to some sphagnum moss for you
http://m.petco.com/product/108967/Zo...Substrate.aspx
http://m.petsmart.com/h5/hub?id=http...id-500013?null
http://www.joshsfrogs.com/substrates...gnum-moss.html
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