Brittle Yarn and Balding Carpet Fibers were breaking free from the carpet's backing when scraped with a dull tool. Read More Carpet, Maintenance January 30, 2015 Permalink acid-based cleaner, alkaline-based cleaner, balding carpet, balding yarn, brittle, chemical, chloride, color loss, control sample, fibers, grout cleaner, hospitality, hotel, in-house maintenance, inspection, lab result, laboratory test, mildew remover, neutralizing agent, pH scale, phosphoric acid, residue, rinse, solution-dyed nylon, test results, third-party testing, threadbare, tile cleaner, yarn