Science & technology | Insect repellents

A better way of keeping mosquitoes at bay is under development

A nifty piece of chemistry may have found a safe, effective, long-lasting protection

2FTE76X Asian Tiger Mosquito,  Aedes albopictus
Little bleederImage: Alamy

Mosquito repellents have come a long way. For decades, the market leader was DEET, which fends the pests off successfully, but only for an hour or two. Recently, Icaridin has become available. This lasts up to eight hours and is just as effective. Yet both are mildly poisonous to cells grown in culture and their toxicity (if any) to human users is constantly debated. The search is thus on for something that is unquestionably not toxic at all.

This article appeared in the Science & technology section of the print edition under the headline “Buzz off!”

From the January 28th 2023 edition

Discover stories from this section and more in the list of contents

Explore the edition

More from Science & technology

A person sleeping. The frame is split between night and day.

Does melatonin work for jet lag?

It can help. But it depends where you’re going

A network of pixelated hearts

Training AI models might not need enormous data centres

Eventually, models could be trained without any dedicated hardware at all


Workers harnessed unto the facade of the Museum of the Future, United Arab Emirates.

How the Gulf’s rulers want to harness the power of science

A stronger R&D base, they hope, will transform their countries’ economies. Will their plan work?


Cancer vaccines are showing promise at last

Trials are under way against skin, brain and lung tumours

New firefighting tech is being trialled in Sardinia’s ancient forests

It could sniff out blazes long before they spread out of control

Can Jeff Bezos match Elon Musk in space?

After 25 years, Blue Origin finally heads to orbit, and hopes to become a contender in the private space race