Graffiti is a constant problem. One vandal can damage dozens of structures in a short period of time. The Hopkins City Code (see Section 615.02 (PDF)) requires property owners to remove graffiti from structures or equipment.
Cleaning Up Graffiti
Graffiti breeds more graffiti. Immediate clean-up is recommended.
If you want to paint over graffiti, first prepare the surface with a stain blocker like KILZ, which comes in spray can or brush form. This will seal the graffiti and keep it from bleeding through the new paint. If the area is small, use KILZ first, then spray the small area with a color closely matching the original.
Apply extra strength paint remover. Seal area with KILZ and paint using stucco paint. Sand blasters can be rented for under $100 per day to clean large areas.
GOOF OFF works well on latex paint but not oil-based. KLEAN STRIP or STRIP X clean oil-based aluminum surfaces. Use small amounts and test areas before attempting to clean entire area!
On painted surfaces, use KILZ to seal and follow with paint in a color closely matching the original color. Use KLEAN STRIP or STRIP X for removing graffiti from stained or varnished surfaces.
Use paint removers such as OOPS or STRIPEEZE - full strength. Rinse completely.
Glass or Plexiglas
Carburetor cleaner and cloth rag.
Try carburetor cleaner first. If that doesn’t work, use STRIPEEZE or OOPS
Brick, Cement, or Concrete
Use extra strength paint remover. Apply with a wire brush and scrub. Allow to dry. Process may have to be repeated before the area is ready to paint.