Everyone from Northern Ohio (especially those of us who live by the lake) know that the summer months not only bring higher temperatures but also Mayflies. For those not familiar with these bugs, consider yourself lucky to have not experienced their swarming nature. Sometimes they even come in packs so big that they actually disrupt traffic, like a recent case in Pennsylvania where a bridge had to be closed. Although they cannot harm you, they can still cause trouble as we have seen. Below is a video from NBC of the after math of these crazy little pests.