OCU warns against ineffective mosquito bracelets and ultrasonic devices

The Organization of Consumers and Users (OCU) has issued a warning regarding the limited effectiveness of certain mosquito protection products. According to the organization, repellent-impregnated bracelets only provide protection to the immediate area around the wrist, leaving the rest of the body vulnerable to bites.

Furthermore, the OCU states there is no scientific evidence to support the efficacy of ultrasonic devices intended to repel mosquitoes. These devices may also cause discomfort to pets such as dogs and cats.

For effective protection, the OCU recommends topical repellents in spray, gel, or stick form that interfere with a mosquito's olfactory receptors. Highly effective active ingredients include DEET and icaridin (picaridin). While DEET is potent, it should not be used on children under two years old. Other options include citriodiol and IR 3535, though essential oils like lavender offer much shorter protection windows.

To manage mosquitoes already inside a home, domestic insecticides like aerosols or electric diffusers can be used, though the OCU advises moderation due to potential toxicity from pyrethrins. Additionally, using a fan can reduce bites by up to 60% by dispersing the CO2 and skin substances that attract mosquitoes.