Let the baking soda and vinegar sit for a bit and then flush it away with boiling water once a day for a week to remove remaining flies.’ If your drain is clogged, this baking soda and vinegar ...

"This method allows you to physically remove the buildup and with it, the breeding ground for the drain flies and their population," Brown adds. RELATED: How to Get Rid of Bed Bugs the Easiest Way ...