Natural Supplement to Repel Mosquitoes and Ticks
Protect yourself from multiple threats simultaneously with a systemic, inside-out approach to insect defense.

The Dual Threat of the Outdoors
When you step into nature, you are rarely dealing with just one type of pest. Mosquitoes swarm in the humid air, while ticks wait silently in the tall grass and brush. Both pose significant annoyances, and both carry the risk of transmitting serious illnesses.
Historically, protecting yourself against both threats required aggressive chemical intervention. You might use DEET for the mosquitoes and treat your clothing with permethrin for the ticks. This means exposing your body to multiple harsh synthetic compounds simultaneously.
How Different Pests Track You
Mosquitoes and ticks hunt differently. Mosquitoes are highly mobile and track plumes of carbon dioxide from a distance, homing in on the specific chemical signature of your sweat as they get closer.
Ticks, on the other hand, use a behavior called “questing.” They climb to the top of a blade of grass and wait for a host to brush past. While they cannot fly, they are highly sensitive to body heat, carbon dioxide, and the specific odors emitted by mammals.

Despite their different hunting methods, both pests rely heavily on detecting specific volatile organic compounds (VOCs) to identify a viable host.
The Universal Deterrent: Sulfur
By altering the VOCs your body naturally excretes, you can create a chemical signature that is unappealing to a wide variety of pests. Elemental sulfur is uniquely effective at this.
When you supplement with bioavailable sulfur, your body metabolizes it and excretes trace sulfur compounds through your skin. These compounds act as a broad-spectrum deterrent. To a mosquito tracking your scent, the sulfur masks the attractive lactic acid. To a tick questing in the grass, the sulfur compounds signal that you are not a desirable host.
Comprehensive, Systemic Protection
Because sulfur works from the inside out, it provides full-body coverage. You do not have to worry about missing a spot on your ankles where a tick might latch on, or forgetting the back of your neck where a mosquito might land.

Tarsul provides a consistent, pure source of elemental sulfur. By taking it daily, you support your body’s ability to maintain this systemic chemical defense, allowing you to enjoy the outdoors without fear or harsh chemicals.
Ready for Comprehensive Natural Defense?
Protect yourself from both mosquitoes and ticks naturally. Order Tarsul today and build your internal defense.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Related reading on this topic
- Natural Insect Repellent Supplement for Travel
- Sulfur Supplement for Natural Insect Repellent
- Natural Insect Repellent for Skin: Why Internal Protection is Better
- Natural Alternative to DEET Insect Repellent
- What is actually in Tarsul, and how it is taken
About this page — last reviewed September 2026
Published by Tarsul, a family-run dietary supplement company operating from San Diego, California since 2010. Written and reviewed in-house by Russ Guillemot, founder, drawing on fifteen years of direct correspondence with customers and wholesale accounts. We are not physicians and nothing here is a diagnosis or a course of treatment.
Where we reference published research we name the authors and the journal so you can look it up yourself. Where something is a common observation rather than a finding, we say so plainly. If a claim cannot be sourced, we leave it out.
Tarsul · 2307 Fenton Parkway #107-42, San Diego, CA 92108 · 619-500-4403 · info@tarsul.com
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.