Upgraded Version with Higher Frequency: This product is an upgraded ultrasonic mosquito repellent with a higher frequency than conventional mosquito repellents on the market. It uses advanced ultrasonic technology to disrupt the nervous system of spiders, mosquitoes, cockroaches, ants, flies, insects, and fleas, inhibiting them and forcing them to hide, thus preventing their reappearance. Convenient and Portable: Thanks to its large-capacity battery, this outdoor mosquito repellent can work for 7 days. Rechargeable, no AC outlet required, easy to carry, it protects you from mosquitoes and other insects. Ideal for camping or traveling. Comes with a lanyard, you can hang it around your neck or attach it to a bag. Flea and Tick Repellent for Dogs, Cats, and Pets: Simply place this portable mosquito repellent on your dog, cat, or pet to repel fleas, ticks, lice, chiggers, and other insects, helping your pet get rid of skin problems. Long-Lasting Outdoor Protection: The ultrasonic mosquito repellent provides long-lasting protection against mosquitoes. A must-have for all outdoor activities, including camping, hunting, mountaineering, running, hiking, traveling, fishing, grilling, gardening, picnicking, golfing, and even barbecues, it repels mosquitoes and allows you to fully enjoy your outdoor activities. Safe and Eco-Friendly: The ultrasonic mosquito repellent is a safe and eco-friendly pest control solution. Chemical-free, non-toxic, odorless, radiation-free, and noiseless, it's safe for your family and your dog or cat. It repels insects or rodents instead of killing them, avoiding disgusting carcasses to clean up.