Service - It With each dishwasher load, deposits of food and detergent can settle in your dishwasher, which over time can build up leading to unpleasant odours and an unhygienic machine. Decades of Research for Excellent Efficacy Dr. Beckmann Service-it Deep Clean Dishwasher Cleaner kills 99.9% of micro-organisms and bacteria leaving your machine hygienically clean and smelling fresh. The handy wipe is great for cleaning the door seals and around the front of the dishwasher.