Does camphor repel rats? Yes, camphor repels rats. It contains an active ingredient known as naphthalene, which has been widely used for years to deter insect pests such as moths from clothes.

Does Camphor Repel Rats?

Does Camphor Repel Rats

Yes, camphor repels rats. Camphor is derived from the wood of the camphor tree and is often touted for its strong aroma. This scent is quite potent and is believed to repel rats. Rats are known for their keen sense of smell, and they find the intense odor of camphor to be unpleasant and overwhelming. As a result, areas where camphor is placed might become less attractive to these rodents.

Since rats do not like the smell of camphor, you will find some camphor sprays that can deter them. These sprays are often nontoxic and safe for pets.

The product is designed to protect wires, cables, tubes, and other items made of rubber or plastic in cars, bikes, and around the house from being damaged by rats. Some sprays contain Denatonium Benzoate, recognized by the Guinness World Records as the world’s most bitter substance.

So, even if rats beat the smell and bite into any surface treated with camphor spray, the extreme bitterness will deter them from your valuables and appliances. The camphor scent helps repel rats without leaving a bad odor in your car or home.

Use Camphor Spray

There are many powerful rat repellent sprays or there, some imbued with a camphor scent. Such sprays typically feature a highly bitter formulation. Its primary function is to protect various items from rat damage by delivering an intensely bitter taste to rats.

Camphor rodent sprays are often suitable for use on any surface vulnerable to rat chewing. The spray can be both odorless and non-toxic for protecting equipment or other items frequently targeted and damaged by rats.

Benefits of Camphor Spray

  1. Leaves no scent behind, which maintains the ambiance of your space.
  2. They are generally non-toxic. Safe for use around humans and pets, ensuring no harmful effects.
  3. The spray format allows for quick and straightforward application.
  4. Can be used on a wide range of materials and surfaces.

A camphor spray can be applied to various objects such as wires, cables, rubber, and plastic parts in cars, bikes, and homes to prevent damage from rat chewing.

Camphor Rat Repellent

1. Motrapso Store Rats Camphor Deterrent

The Motrapso Store camphor rat repellent is made up of several active ingredients: Peppermint at 1.5%, Lemongrass oil, Geraniol, and Cedarwood oil each at 1%. The rest of the formula, 95.5%, is made up of inert ingredients like mica group minerals.

From my experience, this repellent is quite easy to use. I’ve even placed it in my Mustang, around the engine area, and it seems to be effective – no more rats. However, it’s worth noting that this repellent has a strong smell, similar to mothballs. While it does its job of keeping rats at bay, the scent might not be pleasant for everyone. In fact, if you’re not a fan of the mothball smell, this might not be the right product for you. Again I wouldn’t recommend it to those sensitive to strong odors but it works.

2. Motrapso Peppermint Oil and Camphor to Repel Rats

Motrapso Peppermint Oil and Camphor as a rat repellent contains ginger oil (2.15%), lemon oil (2.10%), peppermint oil (0.15%), camphor oil (0.10%), and an emulsifier (95.50%), totaling 100%.

I had a problem with rats nesting in my grill. I wanted a solution that wouldn’t harm humans or pets since it’s a cooking area. I tried placing two of these repellents in my grill. The rats avoided the treated areas but still nested in other parts. Then, I increased it to three, which was better but not perfect. Finally, using all four kept the rats completely away. However, they returned after about four weeks as the scent faded. I plan to buy more since they were effective for a while.

This repellent is also useful in enclosed spaces like car engines, trucks, RVs, garages, basements, pantries, tractors, sheds, barns, boats, and storage units. I also used it when rats damaged my vehicle’s wires. It kept them away from the engine and undercarriage. Placing some near my garage door also prevented rats and other rodents from entering.

Where to Place Camphor for Rats

1. Car – Under the Bonnet

Use the spray in the car under the bonnet where rats can be active. Make sure the engine is cool and at room temperature. Clean and dry the area first. After spraying, don’t start the engine for some hours, up to 4 hours. Don’t spray in the cabin and boot. If you do, everyone in the car might taste bitterness because the product will be in direct contact with them.

2. Car – undercarriage

Be careful when using it under your car’s undercarriage. It’s best to go to a car workshop where they can lift the car. Then you can spray the underside. Don’t try to do it yourself by sliding under the car.

3. Indoors

Use the rat repellent camphor spray cautiously. Spray only on items you want to protect from rats, or that rats regularly come in contact with. Try not to touch the surface after spraying, and make sure you don’t spray it on other items that you handle often.

Meanwhile, outdoor, camphor sprays are not recommended for the roots/soil of your gardens. It’s made to protect your equipment or items from being chewed by rats.


So, does camphor repel rats? Yes, they do. For safety, it’s important to wear hand gloves and a nose mask while using the camphor spray. Remember to wash your hands after use. In case you taste bitterness in your mouth or throat, you can rinse with salt water.

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