We apparently have had a dead rodent or two sealed in behind the sheetrock of our new home (2 yrs.old).  We detected it after 6 months or so in the house.  It is confined to one room and in fact the strongest odor is coming from an area behind the closet light switch.  Has anyone ever dealt with this problem?  Is there something we can do besides take down all the sheetrock :(?  Thanks for any help.