These are some of the most acidic things that land on a car, and also the most commonly ignored.
Bird droppings and tree sap are more damaging than they look. Both are acidic, and both get more corrosive the longer they sit in the sun, which means a spot left for a few days can etch into the clear coat in a way that no amount of washing will undo afterward.
Bug splatter carries similar risk on a smaller scale, especially after highway driving. The proteins in it bond to paint quickly, and scrubbing at it dry is a common way to introduce fine scratches while trying to remove it.
The safe approach is softening the contaminant first with the right product, then lifting it off rather than scraping or scrubbing. That's a fairly simple step, but it matters more on some paint colors and finishes than others.
If a car has visible etching or spotting from sap or droppings that sat too long, an exterior detail with a clay treatment is usually the starting point for getting the surface back to even.
Related: this falls under our Exterior Hand Wash & Wax service, and it's one we handle regularly in Oakville and the surrounding area.
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