Photonmatrix has launched a crowdfunding campaign on Indiegogo for its portable laser mosquito repellent device. The system, ...

PMD came to the attention of U.S. scientists in the 1990s after they learned that a Chinese insect repellent called Quwenling was performing better than many other plant-based repellents.

Best budget buy – Superdrug buzz off insect repellent: £4.50, Superdrug.com; Best for kids – Puressentiel bite and sting spray repellent + soothing: £7.34, Amazon.co.uk; 1.

To create a long-lasting mosquito repellent, scientists began looking for ways to address these attractors and turn them against the mosquitos instead. Image source: mycteria/Adobe.