How many isoprene units in geraniol

Geraniol against parasites: environmentally friendly agent against ticks, mosquitoes & fleas?

Geraniol is at the top of the list of herbal remedies for many parasites.

It has been shown to be very effective in tests with cows.

A big advantage is that it can be used on sensitive skin without any major concerns.

Skin irritation is possible, but there is usually no health risk.

There is even evidence that geraniol might help against cancer.

Table of Contents

Active ingredients & extraction

Geraniol is a natural alcohol found in many plants.

A particularly high proportion can be found - as the name suggests - in geraniums.

There is even more in palmarosa and roses, for example.

Many essential oils contain the active ingredient.

For example, citronella and lemon oil consist partly of geraniol.

The substance is related to citronellol / citronellal and citral - also substances that repel insects.

Protective clothing against ticks:

Mode of action

If insects come into contact with the fabric, their chitin shell is damaged and they dry out.

Ultimately, the insects are said to suffocate because their breathing is impeded.

Geraniol is also said to interfere with development of larvae and eggs.

Plants protect themselves against eating insects and therefore many animals apparently know that the substance is not good for them.

Therefore, geraniol is mainly used to drive away insects and arachnids.

It acts as a deterrent / repellent on:

  • Ticks
  • Fleas
  • Mites
  • Brakes
  • Mosquitoes
  • To fly
  • and many more.

Effect of geraniol in the test

A French study examined the effect against ticks.

A 1% solution was sprayed over the body of grazing cows.

The results clearly demonstrated effectiveness.

In the first week, over 98 percent fewer ticks were found on the animals.

After two weeks it was still 97 percent and after three weeks 90 percent fewer ticks than in a comparison group that was not treated.

Palmarosa practice test

To check the effect of geraniol, I did some tests.

To do this, I dripped 100% natural palmarosa oil onto kitchen paper.

Because the main component of palmarosa oil is geraniol.

I then placed a saucer with around 25 ticks on this piece of paper.

The following time-lapse video shows what happened next.

Video: Test of palmarosa oil against ticks

The experiment showed that the oil repelled the ticks for around 50 minutes.

You can clearly see how they recede from the edge.

So it can be concluded that palmarosa oil works as a repellent against ticks.

It is not certain whether it was really the geraniol in the oil that repelled the ticks.

After all, there could have been other ingredients as well.

In the end, however, it is probably irrelevant: the main thing is to first recognize that it works!

A similar experiment with rose geranium oil, which also contains a lot of geraniol, produced a very similar result.

Duration of action of geraniol

One can conclude from the study that one can count on a duration of action of several weeks also in domestic animals.

Although geraniol is only poorly soluble in water, it can be assumed that the duration of action is reduced by washing, bathing and rain.

If bracelets or collars are used, they should be kept airtight in order to prolong the duration of the effect.

Have you had any experience with geraniol? How long has it been effective for you - maybe even longer than three weeks?

I would be happy about a comment!

Side effects - skin - toxic?

People and owners of animals with sensitive skin should do a tolerance test before use.

Because - like almost all essential oils - geraniol can also irritate the skin.

A contact allergy can also occur in exceptional cases.

So if you are allergic to perfume, you should be careful.

However, it is neither toxic nor harmful to health.

It's also found in many cosmetics, so it's well tested for health hazards.

A positive side effect, on the other hand, could be that geraniol is suspected of being effective against cancer.

However, there is still no clear evidence to confirm the first indications.

Application & possibilities

Geraniol bracelets are popular but contradictory as a remedy against mosquitoes and ticks.

It is best for tall people to attach the straps to the ankle as well.

For dogs and cats there are sprays, collars and spot-ons with geraniol as an active ingredient against ticks and fleas.

This natural product offers an alternative to chemical products, especially for cat lovers.

However, caution is advised when treating cats with essential oils.

Each oil has its own unique composition and cats cannot break down some of them.

You should therefore ask a veterinarian before treating cats with essential oils!

However, here too, opinions about the effectiveness differ widely.

You can also buy the all-natural product and use it individually in insect sprays.


Geraniol does not offer 100% protection against ticks or mosquitoes.

It is therefore not recommended in danger areas - for example in the tropics when there is a risk of malaria.

For some people, the floral smell, reminiscent of roses, is unpleasant.

The substance can also smell too strong for the sensitive noses of some dogs.

Allergy sufferers should check skin tolerance before use.


The great advantage of geraniol compared to other products is that it is well tolerated.

It is a purely herbal active ingredient that is also widely used in cosmetic products.

There are therefore no health risks for humans or animals - even very sensitive creatures have at most to fear irritation of the skin.

The effect against ticks has been scientifically proven and geraniol also offers protection against other parasites and pests.

Unlike other herbal remedies such as B. Margosa extract or pyrethrum, geraniol works not only for a few hours, but for up to three weeks.

The active ingredient is only sparingly soluble in water, so the protection is retained even after a short bath.

Geraniol is harmless to aquatic organisms!

This is a great advantage compared to other agents, some of which are highly toxic to fish, amphibians and other aquatic organisms.


Except for a few allergy sufferers, nothing stands in the way of using geraniol.

Those who do not spurn the scent of roses can protect themselves and their animals against ticks and mosquitoes with tapes or sprays, for example.

Because geraniol drives away the animals and does not kill them, beneficial insects do not have to suffer either.

Therefore, from my point of view, the tick prevention agent is a good choice.

It is true that 100% protection cannot be guaranteed, but with well over 90 percent in the first two weeks, a great danger can already be averted.

In addition, the agent can also be combined with other active ingredients in order to improve the protection against ticks.


Bracelets against ticks and mosquitoes

There are many different bracelets that are not only supposed to help against ticks, but also against all kinds of parasites and pests.

As already mentioned, the effect of these baths is controversial.

According to the manufacturer, they should be effective for about 2-3 weeks.

Most bracelets combine geraniol with essential oils, e.g. B. citronella, lavender or peppermint.

Anti-tick bracelets: offers

Geraniol against ticks & fleas in dogs & cats

There are also tick protection offers for pets based on geraniol.

For example sprays that can also be used against ticks and horseflies on horses.

Geraniol in Pets: Offers

The products from cdVet have also proven themselves.

They can be found in stores under the name ZeckEx.

Here is a price and product overview on Amazon.

All-natural geraniol

Typically, you only need a 1 percent solution to have an effect.

Therefore, you can also use the pure substance to produce tick repellants yourself.

You get the active ingredient in the pharmacy and can also buy it online, z. B. here: Offers on eBay.

Do it Yourself

With the pure geraniol you can make an anti-insect spray yourself.

All you need is a few drops of the active ingredient, which you mix with boiled or distilled water and 40% alcohol.

The following video explains how you can make a mosquito spray yourself.

You can also use other essential oils for this.

For example, like the palmarosa oil in the test, here you can find: Offers on Amazon.

Video: make bug spray yourself

Make tick repellent yourself

Alternatives to geraniol against ticks, etc.

If you don't like the scent of geraniol or have an allergic reaction to it, you can also use other means.

In addition, you can increase the protection by combining it with other active ingredients.

For this purpose, for example, the internal use of black seed oil is ideal.

The oil changes the body odor and additionally repels ticks.

Coconut oil is also an alternative, because insects don't like the lauric acid it contains.

In animals, a mixture of yeast and B vitamins can sometimes help against ticks.

There is also the option for people to wear tick protection clothing.

Another natural active ingredient against ticks is margosa extract, which is obtained from the neem tree.

Scientific investigation on the topic:

A study that showed geraniol's effectiveness against ticks in cows:

Tick ​​protection for humans and animals

Mindful consumption: please only buy what you really need.

As of March 16, 2021

Did you find what you were looking for?

If not, please contact us briefly by email or comment.

Then I'll try to help you and expand the article.

Thank you - also for sharing and for a good rating.

It's great that you're there!