After our week tour of Ireland the front off the camper looked like clusters last stand ,more dead bugs stuck to it than dead bodies from zombie apocalypse,so removing said bodies ,of to halfords for bug off ,after a good wash sprayed on the bugoff ,no bugs came off ,tried warm water and more bugoff ,still red stains from the little devils,decided to give it a break ,got out the black streak remover to remove ,you got it black streaks , and what do you know tried it on the bugs and of they came very little elbow grease required,so to get your van clear of dead insects black streak remover is best 🦗