If you cannot get some effectual bug and tar remover for cars you can use WD40 as an alternative. Because it also serves a significant deal in preventing bugs from hitting your car surface. While it will remove all that fresh tar, bug droppings, tree sap, brake dust, and grime off your car. And it will do its job without hurting the paint job or clear coatings of the car. After the remaining bugs are wiped off, rinse the car surface with water and the best car wash mitt.