Dog repellents can sometimes be in the form of a scent-based dog repellent spray. The scents vary, but some common scents that help keep dogs away include citrus, chili pepper, vinegar, ammonia and rubbing alcohol. A dog’s sense of smell is much more acute than a human’s, so you may not smell a thing, while it is designed to help keep your dog away from the spot with the repellent.
Some dog repellents can also be used as a cat repellent spray. If you want to keep your canine or feline off certain pieces of furniture or out of certain rooms, the same repellent can often work for both of your pets.