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  • DEET (N, N-dimethyl-m-toluamide) is the most effective insect repellent available
  • Active ingredient 95% DEET offers an extremely high level of protection against mosquitoes, ticks, flies, chiggers, fleas and no-see-ums
  • Effectively repels insects that may carry West Nile Virus, Easter Equine Encephalitis, Lyme Disease, malaria and other infectious diseases

Made in USA.

View all Ben's DEET-based Insect Repellent

REI membership


Best Use Backpacking, Camping, Hiking
Active Ingredient(s) DEET (95%)
Effective Duration Time 10 hours
Volume 1.25 fluid ounces
Rated 5 out of 5 by from Works Perfectly I used this product in the Peruvian Amazon jungle. Since it was 100% DEET, I only sprayed my exterior clothing. I used this in combination with a lower DEET concentration lotion which I applied directly to my skin. Between the two products, I had no bug issues. Bugs didn't swarm at all. One bug tried to land on me, but immediately flew away. Just be sure to keep this product away from any plastic material, as it will melt plastic (watchbands, cameras, etc). Only complaint is that that container leaked a little. I had it double-bagged in ziplock bags, so it didn't contaminate anything, but tended to get all over my hands when I pulled it out. I had to be careful not to touch anything until I washed my hands.
Date published: 2011-10-23
Rated 5 out of 5 by from Is very effective at keeping skeeters at bay While on a 4 day backpacking trip. We set up camp next to a wilderness creek and the sun came out shortly after. And so did the little bloodsucking bugs. I had treated my clothing with permethrin days prior. I used the Bens 100 on all exposed skin and we're surrounded by mosquitoes for a few hours prior to dark. I came home with only 1 bite. I don't believe it gets any better than that. All deet products leave an oily feeling to you skin, so knowing to expect that is important. Also follow instructions on what NOT TO apply deet to as it can damage some products. But in the end, Bens is good stuff. It's my go to.
Date published: 2016-06-19
Rated 5 out of 5 by from Strong stuff, effective though Used this in the Shenandoah National Park when the humidity was near 100% and the mosquitoes, ticks, and chiggers were out in full force trying to make me miserable. Like another reviewer said, this is strong stuff. I only used it in very limited skin spots where I was getting hit hard, outer ear, calves, thats it. Use just one or two pumps max. After application it really cut down on mosquitoes coming near me, however it was so hot within 2 hours I sweated it off and had to reapply another pumps-worth. Used in conjunction with permethrin treated clothes the bugs will stay away from you, important in areas like SNP with annual reports of lyme disease.
Date published: 2010-07-17
Rated 4 out of 5 by from Very strong and long lasting Like it shows, it is a very strong formula with close to 100% DEET. It can be very pungent so wouldn't really recommend spraying directly on person or skin...use the less strong formulas for that. I personally would set up the tent and spray around the outside on the bottom...keeps bugs away for days while on the craig away from the tent. If you want it on your person I would recommend on clothing and not direct skin contact. 100% DEET is not really recommended for direct skin contact and could have potentially harmful reactions as it is a neuro toxin; however, DEET alone is not enough to cause harm just when used in conjunction with other neuro toxins. Would highly recommend this product though great repellent.
Date published: 2009-09-23
Rated 5 out of 5 by from Worked in the Amazon I spent a week in the Amazon rainforest, and wasn't bitten once. Everyone I was with had at least a handful of bites, regardless of the type of spray they used. But not me! This is my go-to now. Some things to note. - It is a bit greasy when you apply it, but it's worth it for the repellent affect. - If you have sensitive skin, you might feel a bit of tingling when you apply it. When I put it on my stomach for the first time, it did this. It went away within 10-15 minutes, and didn't leave a rash or anything, but if you know you have sensitive skin you might want to do a test before bringing it with you as your only spray. - The sprayer on the bottle basically sucks. You get this tiny spray, so I wound up squirting my hands a few times, then rubbing it on me, because otherwise it didn't cover easily.
Date published: 2011-04-17
Rated 4 out of 5 by from Kept us from being eaten alive! My girlfriend and I were headed down to Crater Lake when I got a message from a friend who had just been there saying "BRING DEET!" I felt very uneasy about using deet, but I decided to head his warning. We purchased this on our way down and thank goodness we did! The mosquitoes were intense and huge! We didn't use a ton, but a little goes a long way and we were able to keep the little suckers from biting us too much.
Date published: 2016-07-18
Rated 5 out of 5 by from Works Great! Works great where there are a lot of mosquitos. I've used it in Guatemala and locally. It is very effective for 10 hours or so. After that you have to remember to reapply it. After putting it on your hands may feel a bit greasy, but that sensation goes away after a short time.
Date published: 2011-08-07
Rated 5 out of 5 by from Tough Enough for Hawaii! This stuff really works! I had to wait until we returned from Hawaii to write this review because the critters there range from the no-see-ums to the flying buzzsaws. Ben's kept them all away, and for the first time ever, my wife and I both came home BITE-FREE! Yay!
Date published: 2016-04-11
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What are the ingredients in this item?

Asked by: moongirli
The manufacturer lists the 100 Max Formula Insect Repellent with an active ingredient of 95% DEET and 5% other for inactive ingredients. A complete breakdown of ingredients is available on the manufacturer's website.
Answered by: REIservice
Date published: 2016-05-16

I know this is a 1.25 fl oz bottle but does anyone know what this bottle weighs? Trying to cut down pack weight and want to know the weight of this bottle (full). 

Asked by: J Johnson
​This item in the package weighs 2 oz.
Answered by: REIservice
Date published: 2017-05-02
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