What is your gash vehicle anyway? If mine is gash so is yours = childish!
So what product are you on about then that is tried & tested? No mention of it lol! I know these products are tried & tested too & nothing is 100% but that is why they have a warranty, if it wasn't popular people wouldn't use it & if whatever product you are on about is so good why isn't it in the dealers etc? Not that I'm particually bothered anyway you have your oppinions & others have their's so that is that!!
Nothing withstands bird lime especially seagull **** but if you maintain the cleaning of your car you won't have a problem - I NEVER have!