Dimethylethylbenzyl ammonium chloride is widely used as a disinfectant and antiseptic in various industries. It is effective in killing bacteria, viruses, and fungi, making it a key ingredient in cleaning products for hospitals, clinics, and laboratories. Additionally, it is utilized in the food industry to sanitize equipment and surfaces, ensuring hygiene and safety. The chemical is also found in household cleaning agents, such as surface sprays and wipes, for its ability to eliminate germs. In water treatment, it helps control microbial growth in systems like cooling towers and swimming pools. Its antimicrobial properties make it valuable in personal care products, including hand sanitizers and antiseptic solutions.