Here are the care instructions from the VentureShield literature they gave me:
+ Apply Plexus (Venture recommended) pastic cleaner per manufacturer's instructions with a clean microfiber towel or chamois.
+ Remove any foreign material (i.e., bugs, bird droppings, etc.) as quickly as possible in order to avoid permanent staining.
+ Wash car at least once per month
+ Is using a high pressure wash, keep nozzle at least 36" away from Venture Shield edges.
+ For wax build-up around edges, gently use a cotton swab dipped in isopropyl (rubbing) alcohol.
DO NOT USE
+ Powder based or abrasive cleaners
+ Solvent based degreasers
+ Rubbing compound, clay, or other type of abrasive material
+ High speed buffing or polishing equipment
+ Bug / tar removers
I'm glad someone mentioned waxing. I did some Googling and it does sound like it creates an ugly white line can appear using paste (or probably any non-clear) wax. Some people suggest not waxing all the way up to the clear bra line, some people suggest just not dragging the wax over the clear-bra, and some people suggest using a clear spray way around the edges (and then paste elsewhere). I think I will try the latter.
Oh, and the warranty is against cracking, bubbling, or yellowing. I think I said peeling, bubbling, or yellowing earlier... I'll go edit that.