Heavy-duty, concentrated cleaner for heavily soiled carpets. Available in concentrated 1-gallon bottles and product No. 28 dispensed using the 3M(TM) Twist n Fill(TM) Cleaning Chemical Management System. Dilution rate: 1:8. Coverage: Approximately 1,600 sq. ft. per concentrated gallon. Application rate: 200 sq. ft. per diluted gallon.