Skip to content

What Smell Kills Rats Instantly?

What Smell Kills Rats Instantly? Whether you’re a seasoned pest control veteran or a fresh-faced newbie, you’ve likely heard of some of the more traditional rat repellents, like traps and poison. But did you know that there are plenty of natural smells that rats absolutely despise? That’s right, folks – by harnessing the power of certain odors, you may be able to keep those pesky rodents at bay without resorting to harsh chemicals or inhumane methods.

In this blog post, we’ll dive deep into the world of rat repellent smells and explore some of the scents that rats simply can’t stand. So hold your nose and let’s get started!

What Smell Kills Rats Instantly?

Rats can be a nuisance and a health hazard in homes and other settings. While there are several ways to get rid of rats, using certain smells can be an effective and natural method to repel or even kill them instantly.

  • Peppermint oil: Peppermint oil is a natural rat repellent that can also kill rats instantly. Its strong, minty scent is overwhelming for rats, causing them to flee or even die if they inhale too much of it.
  • Ammonia: The pungent smell of ammonia can irritate rats’ respiratory systems and kill them instantly. Mixing ammonia with water and placing it in a bowl or spray bottle near rat-infested areas can be an effective way to get rid of rats.
  • Plaster of Paris: Plaster of Paris is a substance that hardens quickly when mixed with water. Mixing it with a food that rats like to eat, such as peanut butter, can create a deadly trap. When rats eat the mixture, the plaster of Paris hardens in their stomachs, killing them instantly.
  • Camphor: Camphor is a white crystalline substance with a strong odor that rats find unbearable. Placing camphor tablets or balls near rat-infested areas can cause rats to die from the smell.
  • Garlic: The strong smell of garlic can be repulsive to rats and drive them away from your home. You can place garlic cloves around your house or create a spray using chopped garlic and water.
  • Eucalyptus oil: Like peppermint oil, eucalyptus oil has a strong odor that rats dislike. It can also be mixed with water and sprayed in rat-infested areas to deter them.
  • Onions: Rats are also known to dislike the smell of onions. Placing sliced onions around the areas where rats may be present can help keep them away.
  • Bleach: Similar to ammonia, the strong smell of bleach can be deadly to rats if they inhale it in large quantities. However, bleach can also be harmful to humans and should be used with caution. Read more about Does Bleach Keep Rats Away?

Do Mice Hate The Smell Of Vinegar?

Yes, they do. Mice have a strong sense of smell and are known to avoid certain scents. Vinegar is one such smell that they might not like. The strong, pungent odor of vinegar can be overwhelming for these tiny creatures, making it an effective natural mouse repellent.

However, it’s important to note that the effectiveness of vinegar as a mouse repellent may vary depending on factors such as the concentration of vinegar, the surface on which it is applied, and the overall hygiene of the surroundings.

Some people swear by using vinegar as a natural mouse repellent, while others may not see any significant results. It’s always a good idea to use a combination of preventive measures, including proper sanitation, sealing of entry points, and the use of traps or repellents, to keep mice away from your home.

Essential Oil Smells Mice Hate

Some of the most effective essential oil smells that mice hate include peppermint, eucalyptus, tea tree, and cinnamon oils. These oils contain strong scents that are unappealing to mice and can help keep them at bay.

  • Peppermint oil has a powerful aroma that can overwhelm the sensitive noses of mice.
  • The sharp, menthol scent of eucalyptus oil is also known to be effective in repelling mice.
  • Tea tree oil has a strong, medicinal smell that mice tend to avoid.
  • Cinnamon oil is another great option. Its warm, spicy scent can be pleasant to humans but irritating to mice.

To use essential oils as a mouse repellent, simply dilute a few drops of the oil in water and spray it around areas where mice are likely to frequent. You can also soak cotton balls in the oil and place them in strategic locations throughout your home or office.

What Smells Attract Rats?

So, what smells attract rats? Let’s dive into some of the scents that might be drawing these unwanted pests to your space.

  • Food: Rats have a keen sense of smell and are attracted to any strong odors emanating from your kitchen or trash cans. Even pet food left out can be an invitation for rats to come and feast.
  • Garbage: Rats are attracted to garbage due to the strong smells it emits, particularly if the garbage contains food scraps or other organic matter.
  • Standing water: Rats are also attracted to standing water or damp areas, which can provide a source of hydration and a breeding ground for insects and other small organisms that rats feed on.
  • Pet waste: Like garbage, pet waste can be a source of strong smells that rats find attractive.
  • Plants and vegetation: Certain plants and vegetation, particularly fruit trees and shrubs, can attract rats looking for a source of food.

Frequently Asked Questions

Do Mice Hate The Smell Of Lavender?

Yes, mice generally hate the smell of lavender. The strong aroma of lavender oil can be very effective in repelling mice, as it overwhelms their sense of smell and makes it difficult for them to locate food and nesting sites.

Do Mice Hate The Smell Of Lemon?

Yes, mice are known to dislike the smell of lemon. The strong citrus scent of lemon is believed to be a natural mouse repellent, as it can mask other odors that might attract mice and disrupt their ability to communicate with each other.

Do Mice Like Smell Of Oranges?

Mice do not necessarily like the smell of oranges, but they are not repelled by it either. The scent of citrus fruits like oranges may not have a strong enough effect to deter mice from entering an area or seeking out food.

Do Rats Hate The Smell Of Moth Balls?

Yes, rats are known to dislike the strong smell of mothballs. The active ingredient in mothballs, naphthalene, is toxic to rats and can cause harm if ingested in large quantities.


In conclusion, understanding the smells that rats and mice hate can be a valuable tool in keeping them away from our homes and businesses. While some scents, like peppermint and vinegar, are known to repel rodents, others like oranges and lemon may not have the same effect.

It’s essential to remember that rodents have a keen sense of smell and may become accustomed to certain scents over time, so it’s crucial to switch up repellents regularly. Ultimately, a combination of prevention methods, good hygiene practices, and the strategic use of scents can help keep these unwanted visitors at bay.

Robert Gillman, Ph.D.

Science Editor

Robert Gillman is a rodentologist and the publisher of the website RodentsFacts. He has dedicated his career to studying rodents and their behavior, habitats, and impact on the environment. With over 20 years of experience in the field, Robert has become an expert in rodent control and management, and has helped countless individuals and organizations address rodent infestations.

Leave a Reply

Your email address will not be published. Required fields are marked *