I have the sap or honeydew problem, but for the bird poo, which can make holes if left i would use a water based baby wipe or body wipe to remove in situ
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets