Rust, irrigation deposits, battery stains, and efflorescence are not ordinary dirt. They involve minerals, metals, moisture movement, or chemical reactions that require correct identification and surface-compatible treatment rather than more pressure.
Clean Surface evaluates the likely source, affected substrate, coating, stain age, previous products, surrounding materials, runoff, and a controlled test area. Treatment strength, dwell time, agitation, neutralization, and rinsing are adjusted to the observed response.
Removal can improve appearance without correcting the source. Irrigation overspray, migrating moisture, corroding metal, battery leakage, and masonry movement may cause staining to return. Etching, color change, surface damage, and deep deposits can remain.