WindRiver Tick & Mosquito Repellent Clothing Frequently Asked Questions


What is WindRiver tick and mosquito repellent clothing?
Exactly that! Exclusive to Mark’s, this product line consists of men’s and women’s apparel and accessories that repels ticks and mosquitoes (yes, such a thing exists).

Science, Technology and Safety

What makes the clothing repel ticks and mosquitoes?
We cannot claim our products to have a halo effect. The apparel and accessories are treated with a bonding application of permethrin which provides odourless and invisible protection against ticks and mosquitoes. If a tick approaches permethrin, it becomes incapacitated and falls off. If a mosquito approaches permethrin, it becomes disoriented and finds relief by flying away. Fun fact: everyone and their relationship to mosquitoes is unique based on the carbon dioxide their body gives off.
What is permethrin?
Permethrin (pr·meh·thruhn) is a synthetic chrysanthemum (kri·san·thuh·muhm), a chemical derived from a chrysanthemum flower. In other words, permethrin emulates a natural chemical that is bound to the fabric for effective, long-lasting and odourless protection against ticks and mosquitoes.
What makes the technology different than other applications, such as DEET?
When a mosquito lands on DEET, the most common active ingredient in topical insect repellents, it takes some of the DEET chemical away with it, transporting chemicals into the ecosystem. Our garments have permethrin bonded into the fabrication to prevent cross-contamination.
Do I still need to wear insect repellent with the clothing?
It is advised to wear insect repellent in addition to tick and mosquito repellent clothing for optimal results.


Will the product lose its effectiveness when it gets wet?
No. We know the unpredictable weather conditions in Canada and encourage everyone to put our gear to the test. These products will remain effective for over 70 washings through a regular wash/dry cycle.
Can I wash/dry it normally with other clothing?
These products should be washed separately from other garments but can be washed normally. Please see specific garment tags for washing instructions.
Is the product still effective if you wear a jacket overtop?
Yes, but the effectiveness will be limited if the jacket is untreated. Thankfully, this product line includes jackets, shirts, pants, shorts, hats and bandanas for men and women.
Do the garments have UV protection?
Yes, but each garment provides a different level of protection based on colour and the UV application. Please see individual garment tag for UV protection level.
Are there plans to incorporate No Fly Zone® technology into industrial apparel?
Yes. We’ve applied this technology to polyester and are working towards approval for cotton and other industrial-focused fabrics – stay tuned!

Customer Service

I have a customer-service related question. Who should I contact?
Please visit our website to fill out the retail feedback form here.


I work for media and want to feature these products in my next story. Who should I contact?
We’re happy you asked. If you want to learn more about our WindRiver tick and mosquito repellent clothing for a media opportunity, please email us at: