A comprehensive list of commercial and domestic cleaners in Derwood, MD offering house, office, carpet & window cleaning services. Read unbiased customer reviews and recommendations of local companies. 
Since 1994, Knoble Inc. has been serving suburban Maryland with handyman and cleaning services at reasonable prices with a reliable, insured team. Knoble Inc. began as a full-service janitorial company based in Rockville, MD, currently serving the needs of Montgomery County, Northern Virginia and Price Georges County.
Jennifer Summerlin — Congressional OB GYN uses Knoble Inc. to clean our office. They are EXCELLENT! Very trustworthy, excellent service, great