This video went viral last year but bears revisiting as you prepare for those Fourth of July BBQs.

Facebook user Izy Ahmed shared a video of a fly laying maggots under a microscope. The video has almost 30 million views and climbing. You might not worry too much about those flies buzzing around your house, but seeing this will get you to invest in one of those salt guns or a zapper. All you really need is to keep food in containers and keep your surfaces clean.