To begin with we are blessed given the fact we employ a front wheel pull conveyor
(150') and yet are setup like a rear wheel push in that our prep area is totally enlcosed at the beginning and we have 23' to the first arch (pre-soak).
That said, we deal with bugs in three ways. First at the entrance we have coil hoses hooked up to a pre-soak/bug off pump station, These coil hoses allow us to actually apply the bug solution (our alakline pre-soak Eqalizer-Red) to the front end, windshield and backs od side mirrors before trhe car even enters the tunnel. As the vehicle enters the tunnel it trips a bell hose which automatically activates the forks and calls up a roller to begin the wash cycle. At the same time, we brush the front end, windshield and backs of mirrors with hogs hair brushes. If this doesn't finish the job of bug removal, we still have time to employ our 10 HP prep guns to the front as the vehicle is moving down the track.
Once in a while we'll have a re-wash for bugs, but more than likely its not because the 3 step process failed but because an employee failed to follow the process. In any event, due to our space availability, even this degree of prepping for bugs does not slow down our line. Its when prepping slows down your ability to process cars that you end up with huge gaps between vehicles on the the line. Then what many operators are inclined to do is because of the gaps is to turn up the line speed to maintain hourly wash volume - OK if you're setup to wash, rinse and dry at a faster conveyor speed, but disastrous in terms of quality if you are not.
Bugs are a lot like cleaning dirty dished left in the sink overnite -
soap and a little dwell time followed by a sponge or cleaning pad. As car wash operators, we just have to use better
soap and have the advantage of high pressure before the car goes into the wash process.