Houston Chronicle, Graffiti is becoming more and more of a problem these days with America's youth. It almost seems as soon as your remove it, more pops up! We at Houston Pressure Washing Services have mastered the removal of this unwanted graffiti. We test all the products, new and old, to see what works best on different kind of materials. Wheather it be concrete, brick, block, signs, painted, or unpainted surfaces, we at Houston Pressure Washing Services can remove it using the safest products available.