Rats and mice inside of the home are not only annoying, but they can be destructive and even pose a hazard to your health. Rats and mice carry disease, and they often chew into furniture, woodwork and other items. One method for getting rid of rats and mice is to use ammonia. The scent of ammonia is similar to that of a predator's urine, so rats and mice will be deterred because they think there are potential predators nearby.
Clean the areas where you see mice and rats. Use a rag and hot, soapy water to wipe up any spills or crumbs.
Fill several small bowls with equal parts household ammonia and water. Place the bowls sporadically by entrances, doorways and other places where you notice rat and mice activity. Alternatively, soak several rags with undiluted ammonia, lay them in bowls and place them in these areas.
Fill a clean, empty garden sprayer with household ammonia. Spray the perimeter of your home with the ammonia to create a barrier that the rats and mice will not want to cross.
Replace ammonia-soaked rags or the bowls filled with ammonia every few weeks to keep the odour strong. Respray the perimeter of your home with ammonia every few weeks.
Wear rubber gloves when using ammonia. Keep the area where you have the ammonia bowls or rags well-ventilated by opening windows or keeping on exhaust fans to reduce your exposure to the harsh fumes. Keep ammonia-filled bowls or rags out of reach of pets and children. If you have pets or children, place the rags or bowls up high, or avoid this method altogether.