It can be used on external and internal surfaces to provide heavy duty cleaning power wherever it is needed'. '.strtoupper('c')aravan and motorhome cleaner is highly effective at removing winter algae and those stubborn black streaks that plague all owners.it can be used to clean paintwork, plastics, metals, rubber, acrylics, fibreglass, wheels, windows, body trim, work surfaces, synthetic fabrics, carpets, hobs, washable wall coverings and similar surfaces.pop a bottle in the cupboard next time you go away, it truly is an all in one solution.how to useexterior useclean the bodywork one side at a time, pre rinsing heavily soiled surfaces with water.spray the solution onto the area to be cleaned and lightly agitate the surface with a cloth or sponge.rinse with plenty of clean water'. '.strtoupper('r')epeat application as required'. '.strtoupper('d')o not allow the product to dry on the surface.interior usealways check fabrics, leathers and delicate surfaces for colour fastness.spray sparingly onto the area and wipe over with a clean, damp cloth, rinsing frequently in clean water.