Use Xpress Beverage and Drain Cleaner to prevent cold water mold that causes fruit fly breeding. Environments rich in sugars and organic matter are ideal environments for fruit flies to thrive. Express Beverage and Drain Cleaner is an application specific product for all beverage drains including soda fountains and beer taps. Xpress Beverage and Fountain Drain Cleaner cleans grate drain lines and prevents them from clogging. The fully formulated RTU rapidly breaks down organic matter and attacks sugars. Regular use helps maintain clean drain lines eliminating conditions that allow fruit flies to breed, as well as lessening the need for costly service calls for plumbing service and repairs. Proprietary thickening agent used to cling to pipe walls, increasing biological activity and degradation.