The products I suggested, will leave the surface just as easy to clean, as if it was waxed. There are silicones in them, that will give the same result.
The secret to removing bugs is to wet them down with a spray bottle full of water, in a fine mist. After a minute, you can wipe them right off.
You haven't cleaned bugs, until you have to clean them off an airplane. There is around 100 square feet of area on ours, that faces forward, and gets plastered, just about every flight in the summer.
For really dried bird droppings: Spray the spot with Windex, and cover it with a paper towel. When the wet spot shows through the paper towel, wet it with more Windex. Let it sit about 5-10 minutes, and the droppings will come right off. :thumbsup:
Tree sap: Use real hot water.
If anyone has a white, or silver vehicle, with all the tiny orange rust speckles on the sides, it's from brake dust. The hot particles stick to the paint, and rust. All cars get it, you just can't see it on most colors.
To remove this with little effort, buy a bottle of oxalic acid crystals from a larger pharmacy. Dissolve a few tablespoons, in a quart of warm water. Using a sponge, wet the affected areas with the solution. Re-wet the areas every few minutes, as the solution begins to evaporate. After about 10 minutes, you will start to see the spots disappear. Repeat until they are all gone, and rinse the areas thoroughly.
Oxalic acid may eventually irritate your hands, if they are not real tough, so wear rubber gloves. And, eye protection would be a real good idea. For an example, oxalic acid is not nearly as bad, as TSP as far as skin irritation. It is poison, so you need to keep it away from pets, and children.