What smells do rats and mice hate? 5 scents to help deter these pests (2024)

In most cases, rats and mice are not normally wanted nor welcome in our personal space, and there are many different methods you can try to help warn these pests away from your home.

Along with sealing entry points, using traps, or in severe cases, hiring professional pest exterminators, incorporating certain scents around your home to get rid of mice and to get rid of rats can also help with your pest problem.

Here, we explore five different smells that rats and mice hate – many of these items you will already have in your home, so it is an easy and effective pest control method to try.

What smells do rats and mice hate?

We've asked a collection of pest control experts to share their advice on the smells that rats and mice hate and how you can use them around your home.

1. Essential oils

Essential oils like peppermint, eucalyptus, cedarwood, and clove oil have powerful scents that can help to repel rodents.

According to Brett Bennett, director of operations at PURCOR Pest Solutions, you can dilute such oils, such as these Essential Oils from Amazon, in water and spray them in the areas where rodents have been discovered, their entry routes, nests, and near baseboards.

Nicole Carpenter, president of Black Pest, also says that using peppermint oil is considered one of the most potent natural repellents against rats and mice.

‘The smell of it is too strong and overpowers their sensitive olfactory system, which makes it impossible for them to navigate and find food sources,’ says Nicole. ‘To keep rodents away using peppermint oil, soak cotton balls in the oil and place them strategically around entry points, nesting areas, and other areas where rodents are active.’

Try placing cotton balls, such as these Cotton Balls from Walmart, behind appliances, inside cabinets, under sinks, etc. The smell permeates without being overpowering for humans. Replace monthly for best effect. We explore how to use peppermint oil to get rid of mice in our dedicated feature.

You can also purchase handy sprays, such as this Mighty Mint Peppermint Oil Rodent Repellent Spray from Amazon.

2. Mothballs (Naphthalene)

Mothballs contain naphthalene – a chemical compound known to have a strong odor, which repels rodents. There are a number of different mothballs on the market, such as the Fasderceg Rodent Repellent balls from Amazon. These moth balls also contain concentrated peppermint which helps when combined with the naphthalene.

However, mothballs can be toxic to both humans and pets, so it is advised to use them in more enclosed spaces, such as attics, basem*nts, or crawl spaces where rodents are frequent visitors. If you are using mothballs, use them cautiously and according to the safety guidelines set by the manufacturers.

3. Ammonia

Ammonia diffuses a sharp, pungent smell that rodents find quite obnoxious and irritating. Ammonia should be mixed in equal parts with water in a spray bottle and applied to areas that are either infested or suspected, such as entry points, nesting sites, and along baseboards.We recommend using a multipurpose ammonia cleaner, such as this one from Amazon.

However, ammonia should be used safely; exposure to highly concentrated ammonia fumes for a long period could again be dangerous for both humans and pets. Always read the instructions on your ammonia cleaner bottle carefully and aim to use this solution in small doses.

4. Cayenne Pepper

Cayenne pepper has a strong scent as it contains capsaicin, which tends to give rodents a burning sensation in their noses and mouths, thereby discouraging them from entering the treated area.

Cayenne pepper powder, such as this Cayenne pepper from Amazon, should be sprinkled along the perimeter of buildings, near entry points, and in areas where food is kept. However, the pepper needs to be reapplied regularly, especially after rainfall or watering, since it tends to lose its effect over time.

You can always plant a few cayenne pepper plants in your backyard so you dry them out and have a steady supply for when you need the powder.

We look at more scents garden pests hate in our separate feature.

5. Vinegar

Vinegar has a strong, acidic odor that can help repel rats and mice. A good method is mixing vinegar and water in a 1:1 ratio in a spray bottle; then spray the solution into areas where rodents frequent, such as countertops, baseboards, and around trash cans.

Cotton balls soaked with vinegar and placed strategically in areas where rodents frequent also work well as a deterrent to keep them away.

You can also use a vinegar spray, such as this All Purpose Cleaning Vinegar Multisurface Spray Cleaner from Amazon.

FAQs

How do I get rid of mice and rats ASAP?

To help get rid of mice and rats ASAP, it is always worth calling in professional pest exterminators, however, while you are waiting for them to attend to your home, trying out DIY pest control methods, such as using scents that rats and mice hate, using traps and attempting to seal entry points can help to keep the rodents at bay.

Note that, though these smells will tend to repel rats and mice, they are not perfect and efficient in eliminating an already existing infestation. If the rodent problems are serious or persistent, it is always better to contact professional pest control to develop a comprehensive eradication plan tailored for your particular situation.

What smells do rats and mice hate? 5 scents to help deter these pests (2024)

FAQs

What smell do rats and mice hate the most? ›

Conclusion
  • Peppermint oil. Peppermint oil is a natural repellent that can be used to keep mice away. ...
  • Cinnamon. Cinnamon is another natural repellent that mice hate. ...
  • Vinegar. The pungent smell of vinegar is also effective at repelling mice. ...
  • Citronella. ...
  • Ammonia. ...
  • Bleach. ...
  • Mothballs.

What smell kills rats instantly? ›

Ammonia. Ammonia is one of the top-recommended options for deterring rats with smell alone, but there are some potential risks for humans and pets. The smell is quite strong and has been shown to turn rats around in their tracks. It can even kill rats and mice when they inhale too much in a confined space.

What is the best homemade rat repellent? ›

Essential oils that may be helpful in repelling rats and mice include peppermint oil, lemon oil, citronella oil, and eucalyptus oil. You can make an essential oil spray by mixing 2 teaspoons of oil with 1 cup of water or rubbing alcohol in a spray bottle. Then spray it anywhere you see traces of rodents.

What keeps rats away permanently? ›

Filling holes and cracks that provide entry points and installing professional exclusion systems from companies like Cat-Guard provides a safe, natural, permanent barrier to keep rats out.

What does vinegar do to rats? ›

With its strong smell, vinegar possesses properties that can be highly effective in repelling rats. When mixed with water and applied in areas where rats are active, vinegar acts as a deterrent that makes them reconsider staying in the vicinity.

What gets rid of rats the fastest? ›

So, what is the fastest way to get rid of rats? Pest control is the most efficient method to get rid of rats quickly but the usage of mouse traps, snap traps, chemical baits, and live traps are all effective methods to get rid of rats as quickly and effectively as possible.

What are the top 3 rat repellent? ›

Essential oils are some of the best natural rat repellents. Rats have a highly developed sense of smell, which makes strong odors such as pine oil, cinnamon oil, and mint oil offensive to them. Cayenne pepper, cloves, and a mixture of vinegar and ammonia will keep rats away as well.

What are rats afraid of? ›

Rats cannot tolerate smells such as ammonia, mothballs, peppermint oil, crushed cayenne pepper, and pepper spray due to their intensified sense of smell. Clean and uncluttered homes and yards scare rats due to the lack of food and places to hide, as well.

Do mothballs keep rats away? ›

Mothballs repelling mice and rats is a common misconception. Mothballs contain a small amount of naphthalene and can be a deterrent in large quantities, however, they aren't powerful enough to get rid of mice and rodents.

Does human pee deter rats? ›

Nor have mothballs, pepper sprays, peppermint, or other smelly chemicals been proven to deter rats. Cat, dog, or human hair or urine sprinkled in a garden also appears to have no impact on rats. Beware of anyone claiming they have a secret weapon or chemical that will get rid of rats.

What is a natural killer for rats? ›

While not an instantaneous solution, one of the most effective and humane home remedies is to create a natural rat poison using plaster of Paris or clumping cat litter. When mixed with food bait, the plaster or litter causes thirst, and rats will seek out water until they eventually die.

How to get rid of rats in house fast? ›

How to Get Rid of Rats from the House Fast
  1. Thorough Inspection:
  2. Seal Entry Points:
  3. Remove Rat Shelters:
  4. Maintain Cleanliness:
  5. Use Rat Traps:
  6. Employ Natural Deterrents:

Will mice leave if they smell peppermint? ›

Peppermint oil produces a scent that mice do not like and makes them stay away. Many people will use peppermint oil throughout their house to keep it mice-free. Mice are pesky household critters that can devastate the home interior and gnaw through some favorite snacks hidden in the pantry.

What kills mice asap? ›

Zinc phosphide is an acute toxicant that causes the death of a house mouse within several hours after a lethal dose is ingested. It appears to be the fastest way of getting rid of mice by reducing their population.

Will rats leave if they smell a cat? ›

You might think the presence of a cat would keep rats firmly away, but in actuality, they aren't as threatened by cats as you might expect. However, studies have shown that the odour of a cat does act as a deterrent for rats to come out into the open to search for food or water.

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