I've been researching insect repellents, and thought I'd share what I've found to help others with young children, and yourself, make the best choices. It took me a while to find all of this information...a few of the toxicity reports were difficult to find (I'm not savvy on the technical chemical terms).
The current insect repellent choices on the market:
- DEET (sold as Off! and many more)
- Picaridin (sold as Avon's Skin So Soft Bug Guard and many more)
Toxicity Category Levels for these products
Category I = very highly or highly toxic
Category II = moderately toxic
Category III = slightly toxic
Category IV = practically non-toxic
1. What are the toxicity levels of each product?
DEET:
- Toxicity Category III for eye, dermal and oral
Picaridin:
- Toxicity Category III for acute oral and acute dermal
- Toxicity Category IV for primary eye and skin irritation
Oil of Eucalyptus:
- Toxicity Category IV for acute oral, dermal and skin irritation
- Toxicity Category I for eye irritation (Toxicity Category II for the end-use product)
2. Which is more effective?
- DEET (N,N-diethyl-m-toluamide) or picaridin (KBR 3023) provide longer-lasting protection than the other products
- Oil of lemon eucalyptus (p-menthane-3,8-diol) provides longer lasting protection than other plant-based repellents.
3. What exactly is Oil of Eucalyptus?
Chemical name: p-Menthane-3,8-diol occurs naturally in the lemon eucalyptus plant. The natural oil can be extracted from the eucalyptus leaves and twigs. For commercial use, the active ingredient is chemically synthesized. p-Menthane-3,8-diol is structurally similar to menthol.
I went to Whole Foods and a few other health stores, and the workers there didn't know what I was talking about when I mentioned "oil of lemon eucalyptus". A few of them took me to the essential oil aisle, say "oil of lemon" and "oil of eucalyptus", and said maybe combining them is what I meant? The actual answer (from the CDC): "“Pure” oil of lemon eucalyptus (e.g. essential oil) has not received similar, validated testing for safety and efficacy, is not registered with EPA as an insect repellent, and is not covered by this CDC recommendation."
What about the discussion for a product that combines sunscreen and DEET?:
"The Agency (EPA) had deferred its decision on the combination DEET/sunscreen products until it has solicited the views of various governmental agencies and other groups. Sunscreen products are intended for frequent, generous use, and DEET products are intended for
spare, infrequent use."
When to use DEET?
"DEET's most significant benefit is its ability to repel potentially disease-carrying insects and ticks. The Centers for Disease Control (CDC) receives more than 20,000 reports of Lyme disease (transmitted by deer ticks) and 100 reports of encephalitis (transmitted by mosquitoes) annually. Both of these diseases can cause serious health problems or even death in the case of encephalitis. Where these diseases are endemic, the CDC recommends use of insect repellents when out-of-doors. Studies submitted to EPA indicate that DEET repels ticks for about three to eight hours, depending on the percentage of DEET in the product."
When to use plant-based pesticide?
I will personally choose to use the oil of lemon eucalyptus (avoiding the eyes...sheesh!) when we are outside for less than 2 hours, and see if that helps keep mosquitos at bay.
More reading:
Updated Information on Insect Repellents, CDC
Insect Repellents, CDC
My sources:
- CDC (Centers for Disease Control)
- EPA (Environmental Protection Agency)
- APA (American Pediatric Association)
Please add any information (with a link to its source) that you find regarding insect repellents. Thanks!
All user-generated information on this site is the opinion of its author only and is not a substitute for medical advice or treatment for any medical conditions. Members and guests are responsible for their own posts and the potential consequences of those posts detailed in our Terms of Service.
Add a Comment12 Comments
Dear Alison,
Thank you for your report. May I add the following information:
The Oil of Lemon Eucalyptus is not a mix of the Oil of Lemon with the Oil of Eucalyptus. It comes from the plant named Lemon Eucalyptus (Eucalyptus Citriodora). I have been using this oil (25 drops mixed in a 60 ml spray bottle with water) for many years with great success. I'm usually a mosquito magnet. But not with this natural oil. I now even use it on my baby with care. I had to special order the oil of Lemon Eucalyptus at Wholefoods because they didn't carry it (but they will gladly order it for you). It only costs about $5 for a .5 FL OZ (15 ml) bottle.
Hope that helps!!
Note: I live in the Dallas area.
Ziggy
June 18, 2009 - 9:05pmThis Comment
Ziggy,
Thanks for clarifying, I guess this did not come across in my original post.
I mentioned that one of the stores I went to suggested that I combine the two oils, when clearly this is NOT what Oil of Lemon Eucalyptus is...it is a separate plant all-together, as you mentioned (I gave the chemical name; your plant name probably makes more sense).
I live in Austin, and retail stores do sell the Oil of Lemon Eucalyptus (does not need to be special ordered), by the brand name "Repel".
Thanks again!
July 7, 2009 - 2:00pmThis Comment