How do they get into a Mercedes Benz? I thought I had all the holes the dealer neglected at PDI plugged, but I still have turds under the rear seat of my '95 E 320 wagon. I plugged the 4 holes used to hold the car down during shipping, plus some others under the hood that might be an entrance. I looked over the car while it was on the lift today and can't find any other places, but I obviously have missed at least one. Has anyone found others?