Summer is a good time for outdoor activities, but mosquito bites are annoying. Although traditional mosquito coils and mosquito repellents are effective, they may contain chemicals and long-term use may be harmful to health. As a modern mosquito repellent device, mosquito repellents (also known as electronic mosquito repellents) have gradually become the choice of many families due to their safety and convenience. Today, let's talk about the types, principles and purchase recommendations of mosquito repellents.
Types of mosquito repellents
Currently, mosquito repellents on the market are mainly divided into the following types:
Ultrasonic mosquito repellents
Principle: imitate the wingbeat frequency of male mosquitoes (or the frequency of natural enemies such as dragonflies), and use ultrasound to repel female mosquitoes (female mosquitoes suck blood, male mosquitoes do not).
Advantages: no chemicals, environmentally friendly and silent.
Disadvantages: The effect varies from person to person, and some studies believe that ultrasound has limited effect on repelling mosquitoes.

Photocatalytic mosquito repellent
Principle: attract mosquitoes through ultraviolet rays, and then use built-in fans or electric shock devices to kill mosquitoes.
Advantages: physical mosquito killing, no chemical residues.
Disadvantages: Mosquito corpses need to be cleaned regularly, and ultraviolet rays may not be friendly to people with sensitive skin.
Electric mosquito repellent (liquid/tablet type)
Principle: Heat mosquito repellent liquid or mosquito coils to release pyrethroid ingredients to repel mosquitoes.
Advantages: Stable mosquito repellent effect, suitable for indoor use.
Disadvantages: Consumables need to be replaced, and some sensitive people may not be comfortable with the smell.
Portable mosquito repellent (USB/rechargeable)
Principle: Combined with ultrasonic or volatile mosquito repellent ingredients, suitable for outdoor use.
Advantages: Small and portable, suitable for camping and traveling.
Disadvantages: Small coverage.
How to choose a mosquito repellent that suits you?
Usage scenarios
Indoor: Electric mosquito repellent or photocatalytic mosquito repellent is more effective.
Outdoor: Portable ultrasonic or mosquito repellent bracelet is more practical.
Safety
When there are pregnant women, infants and young children at home, it is recommended to choose physical mosquito repellent (such as ultrasonic or photocatalytic).
Avoid long-term exposure to ultraviolet rays or chemical volatile environments.
Maintenance cost
Electric heating and photocatalytic types require regular replacement of consumables, while ultrasonic types do not require additional costs.
User reviews
The effects of different brands vary greatly. You can refer to real user feedback before purchasing.
Tips for using mosquito repellents
It is recommended to place ultrasonic mosquito repellents near doors and windows to prevent mosquitoes from entering.
Photocatalytic mosquito repellents should avoid direct exposure to the human body and can be placed in a corner for night use.
Pay attention to ventilation after using electric mosquito repellent liquid to avoid long-term use in confined spaces.
Conclusion
Mosquito repellents provide a smarter mosquito prevention option for modern life, but no product can 100% prevent mosquitoes. Combining physical protection (such as mosquito nets, long-sleeved clothing) and scientific mosquito repellent can make summer more comfortable and worry-free. Which mosquito repellent have you used? Welcome to share your experience in the comment area!