God, don't talk to me about tree sap! I have to park under trees at work (I got moved from the covered parking... ) and pretty much every day I return to find the roof, windscreen and bonnet of the car covered in both sap and bird shit. I'm having to put it through the car wash about twice a week at the mo (fortunately my local Shell have got a deal on where you get the top programme for £3) but its still a pain in the ass. I'm considering buying a car cover just to try and keep the paintwork protected.