Bug spray is a common term used to describe many types of insect repellents, but there are several other synonyms that can be used in describing these products. Some of the most commonly used synonyms include insecticide, mosquito repellent, pest control spray, insect killer, bug repellent, fly spray, and insect repellant. Other synonyms that can be used to describe bug spray include bug lotion, insect deterrent, bug balm, and bug guard. No matter what name is used to describe these products, they all serve the same purpose of keeping insects at bay and providing protection from bites and stings.