NEW CHIP TECHNOLOGY - NOTE: Our products are much better than normal ultrasonic repellers. The ultrasonic repeller uses the latest electromagnetic and ultrasonic waves to drive away mice, rats, spiders,ants, insects, cockroaches, mosquitoes, fruit flies, fleas, crickets, gnats, insects and rodents. 100% safe for children, pets and pregnant women. MORE SAFETY FOR CHILD AND PETS Thr - Discard harmful poisons, dangerous chemicals, poisons and traps, without unpleasant smell. Advanced ultrasonic technology, this environmentally friendly, non-toxic deviceand tasteless, without any chemicals, safe for children, pets and pregnant women. Can be used safely at home and effectively eliminate pests. Wide Effective Coverage- Widely use these repellents in kitchen, living room, bedroom, bathroom, warehouse, basement, offices, gardens, hotels, etc Coverage can be up to 800-1200square feet. Because ultrasonic cannot pass through walls, so we recommend a pest repeller for each room will work more effectively. But for areas with serious pests, more. Easy to Use - Easy to use without any complex steps. Just plug in and it will work automatically. Be sure to install it vertically 7-31 from the floor. And make sure there are no barriers like curtains orcabinets covering in front of the repellent. Most customers can see results within 2-3 weeks Then we can say goodbye to pests and mice ASS LIFETIME WARRANTY ASSURANCE - To ease your pest repeller anxiety, we invite you to try our ultrasonic pest repellers. We offer a money back guarantee if you don't see results withinthe 4 weeks. Typical results may take 3-4 weeks depending on the amount of infestation. Color name: 4*packs Why choose us: 1. No noise for driving pests. 2. Continuously and powerfully repel many types of pests. 3. Exquisite appearance. 4. Wide coverage: hotel, super market, warehouse, home, restaurant and so on. Notes: 1. Stay away from carpet, curtains and any sound absorbing material that may reduce the effect. 2.The number of rodents and insects may increase in the first few days. And the pest control product will completely drive them away for good about four weeks later. 3.It is normal for the mouse and vermin to increase in the beginning of the days of use, because they move away from the living place after the attack of the ultrasonic. Typically, it sometimes takes 3-4 weeks to see results.