Here’s what a pest expert told me about how to keep flies away. According to Matt Lenton, an expert in pest control at Insect and Flyscreens, uncovered food, overripe fruit, overflowing bins, pet food, crumbs and even small spills can all attract flies into your home. £7 from Amazon.co.uk Prices may varyWhat’s the best way to get rid of flies once they’re already inside? Empty your bins, clean food preparation areas, wash any dirty dishes and check your drains for build-up, advises Lenton. Reviewer Rachael Penn wrote in her guide to the best kitchen bins: “The bo touch is one of those bins that manages to effortlessly blend style and substance.