I boil the empty bags in water for a few minutes, takes care of any nasties. That said i don't use them for glass carboy's anymore, they swell up and are a bitch to get out. Hops go straight in from now on.
"Armored Pegasus" - Extra IPA
"Queen of Thrace" Almond Cream Stout, "Genesis" Ancient Hebrew Smoked Date Beer, "Lumberjack" Maple Dunkelweizen (10% abv), "1776" Molasses Porter, "Scarecrow" American heavily hopped Hefe, "Iron Horse" American Amber