An insectifuge is a substance used to repel insects. It can be a natural or synthetic product that is applied to the skin, clothing, or an area of a room to keep bugs away. The word insectifuge is relatively uncommon, but there are a number of synonyms used to describe this type of substance. Some of the most popular synonyms include insect repellent, bug spray, insecticide, pest control, insect deterrent, and bug repellent. These terms are often used interchangeably and can help consumers find the right product for their needs, whether they are looking for a natural or chemical-based solution to keep pests at bay.