Sugarsoap

Leaves no residue and can be used on wood, stone, metal, plastic, and painted surfaces. Depending on the condition of the surface, sanding may no longer be necessary. Always test on an inconspicuous area before use.  

Dilute 50 ml of the product in 10 litres of water. Apply with a sponge and wipe off with a damp cloth or rinse with water. Once dry, the surface is ready for painting. For heavy contamination, use undiluted and wipe off with a damp cloth.