So i was wetsanding and buffing and polishing the car and some of the residue from the buffing compound got into the honeycomb area on my grilles. See pic. I know i know, seems like not a big deal, but it's difficult to get anything in there to clean them and very frustrating. Anyone have any ideas on what to use. I tried putting a rag on the end of a screw driver but to no avail as it is too difficult to get in the corners. Thanks.