Fences made of concrete blocks do not require frequent renewal. Implementation of impregnation prevents the absorption of pollutants, so the only treatment may be smuggle the fence with a pressure washer.
Nonimpregnated fence on which there were efflorescence or other debris created during installation can be cleaned with a variety of preparations.

Preparation for removing efflorescence and raids effectively removes carbonate efflorescence produced in the form of white spots and infiltrates on materials like concrete paving stones, clinker brick, concrete blocks. It is recommended to clean the surfaces before impregnation or painting. Effectively cleans tools and machinery from all remnants of mortars and adhesives based on cement or calcium.