【Upgraded Ultrasonic Insect Repellent】This upgraded ultrasonic insect repellent has increased frequency, it uses advanced ultrasonic technology to interfere with the nervous system of pests, making them uncomfortable and forcing them to leave. [Size] Ultrasonic mosquito repellent is only 623615mm, which is very small. You can take it anywhere and protect yourself from mosquito bites. 【Harmless】It repels insects or rodents instead of killing them, so no nasty corpses are left to clean up. No chemicals, no toxins, no smell, no radiation, no noise, safe for your family and your beautiful dog or cat. 【Suitable for Pets】Repel fleas, ticks, lice and other insects by simply hanging one of our portable insect repellents on your dog, cat or pet. It can help your pet avoid skin problems and is safer than chemical sprays. 【Application】Ultrasonic mosquito repellent can prevent mosquito bites for a long time. The best companion for camping or traveling. With a rope, you can hang it around your