When it comes to mice and rats, there are certain smells that they absolutely detest. In fact, the number one smell that drives them crazy is peppermint. They simply cannot stand the scent and it can send them running in the opposite direction. It is recommended to place peppermint oil or cotton balls soaked in peppermint oil in areas prone to infestation, such as garages or attics, to repel these unwanted pests.

Another smell that rodents despise is ammonia. They find the strong scent unbearable and it acts as a strong deterrent for them. By mixing ammonia with water and wiping down surfaces, particularly in areas where they like to nest, you can repel them effectively.

Rodents are also repelled by the scent of onions and garlic. They find these strongly scented foods to be unpleasant and will avoid areas that smell like them. Placing onions or garlic cloves in the corners of rooms or near entry points can help keep mice and rats away.

Other smells that are effective in deterring rodents include mothballs, vinegar, and cayenne pepper. These odors are highly disliked by mice and rats and they will do their best to stay away from them.

In conclusion, there are several smells that mice and rats hate, with peppermint being the most powerful deterrent. By utilizing these scents, such as peppermint oil, ammonia, onions, garlic, mothballs, vinegar, and cayenne pepper, you can effectively keep these unwanted pests out of your home.