Remove with sand or water blasting and pressure washing
Pressure washing is generally used for unpainted concrete surfaces like curbs and cinderblock walls.
Start with the gentlest setting first, because damage can easily occur.
Follow the recommendations for
Remove with chemical products
Chemical products are generally used for metal and aluminum poles, boxes, and signs.
Follow the manufacturer’s specifications to avoid dangers to your health and affected surfaces.
Removal tips for trees, sidewalks, and vehicles
Wash the tree with a garden hose. Do not use lacquer thinner or paint. You might apply mineral spirits and let it sit for five to 10 minutes, and then wash with water. Contact a nursery for other suggestions.
Use a wire brush. If that doesn’t work, try lacquer thinner or pressure washing. Clean one square at a time.
Use a solvent-based cleaner that can be obtained from hardware or home improvement stores. Be aware that these cleaners are likely to remove the wax from your vehicle’s paint as well as the graffiti.