I have a 996 hardtop and need to clean the bottom of the back window and the rear of the parcel shelf. It was stored on end and leaves and other garage debris worked themselves into this narrow crivice. I vacuumed what I could with a straw but the rear of the parcel shelf and the bottom of the window are still dirty. Can the shelf come off without removing the glass? Any ideas?

 

You can try a brush with compressed air. A medium stiff brush with long bristles can get the stubborn material, you can add some water or cleaning solution also just be careful to blow all moisture out.

Is the glass stained? If so, like a dirt line, then try some vinegar or straight IPA......although if it's aftermarket tint you may want to avoid the vinegar and most definitely ammonia cleaners.

Anthony