I was forgetting the damage DEET can do to stuff, I raised the Iphone to my ear a couple of weeks back, after applying DEET to my skin during a pretty big hatch of mozzies / farm midges, on looking at the screen to finish the call, I noticed the plastic screen protector had gone opaque big time, no amount of wiping had any effect, this is a top quality film with a guarantee on it against scratching, so I was pretty p888ed off, been cleaning the Fireball this morning & don't know why, but gave the plastic film a good rub, with a clean cotton rag soaked in Methylated spirit, hey presto!!! sorted!.