This overall score is a measure of soil removal. Our experts soil white ceramic tiles with oily grime. Using a scrubbing apparatus with a damp cloth attached, the tiles are scrubbed 40 times. The reflectance readings are measured before and after cleaning to determine the overall score.
We calculate how much each application of the cleaner costs based on five sprays per application. You might be tempted by a product that costs less per spray, but consider the cost in relation to its performance.