Sounds like you'd need to send #FINDIDs of everything you want to ignore to the ignoreitem list.  You could either take a script like my 
FINDINFO Item Script and then add the #FINDIDs of the creatures/players to a list to ignore.
; place at the beginning of the script
set %ignore_list XXYYZZ1_XXTYYZZ2_ ; separate #FINDIDs by underscore.  Use FINDINFO tool to find these values
ignoreitem %ignore_list
 
Note that if the script has an "ignoreitem reset" then you'll have to re-add these ignored values
Note note: XXYYZZ1_XXTYYZZ2_ are just examples and not real #FINDIDs