Crest Cleaners Gaithersburg created the EcoTech System to represent our commitment and concern for your safety, your clothes, your time, and our planet. When you clean with Crest, your clothes are in the care of garment specialists who use Green Earth Cleaning, a silicone solvent that is non-abrasive and odorless. Your clothes will last longer, your colors will stay brighter, and your skin will thank you for staying away from carcinogenic cleaners that are still commonly used at many cleaners. All dry cleaning is not created equal; there's safety, value, and longevity included in the cost of Crest's care.