i have glued silca gel sacks to the underside of mason jar lids before storing some bud. I thought it couldn't hurt anything and it didn't.
as of if it helped anything, who knows? I didn't get mold or anything - but then i never have even without it.
funny, my 17 year old son found the silca gel jar and then glued a pic of himself under another of my stash jar lids. Funny, smartass kid.
He's now 18 and we enjoy the ganja together....
anyways, i wouldn't use it to dry bud, just to help eliminate moisture during storage.