Pre-Seed Round Open. Investor Inquiries: esther@cloakbiotech.com
Dual-Use Biological Readiness

A new insect repellent you actually want to apply.

CLOAK engineers the skin's native microbiome for long-duration repellency against disease-vector insects.

EPA Regulatory Pathway Engaged DARPA-Originated Research
Program Pedigree

Backed By.

The Problem

Mosquitoes are a massive, growing public health problem.

700M
People infected every year
1M
Deaths every year, across 85 countries
1–4 WKS
Downtime per case, for deployed personnel

Climate change is expanding where mosquitoes live, putting more people at risk every year.

Global Health

CLOAK adds a new tool in the fight against malaria, working alongside existing treatment, vector control, and vaccines.

Defense

Built for continuous use in the field, meeting U.S. military and NATO reliability standards, without the hassle of constant reapplication.

World's First Skin Microbiome Repellent

A Living Shield, Not a Chemical Spray.

CLOAK engineers naturally occurring skin bacteria to modify the chemical signals mosquitoes use to locate humans. Protection is engineered at the source of attraction, not by masking with topical chemical agents.

Lasts for Days

One application keeps working for 11+ days in animal studies, versus a few hours for sprays like DEET.

No Chemicals, No Smell

Applied like any spray, just no harsh chemicals, no smell, and nothing left behind on your skin.

Works Against All the Major Mosquito Genera

Verified efficacy across the Aedes, Anopheles, and Culex genera, plus sandflies.

Leadership

Meet the Team.

Our founders led the original DARPA-funded research CLOAK is built on.

EPA Pathway Engaged DARPA-Originated IP Peer-Reviewed Research Safe, Engineered Bacteria