Insect Repellent Pest Control Ultrasonic Set Reject Pro Bug Repeller Home Defender Non-Toxic Pet Safe (White 2 Pack) 5 Core RR 9006 W 2

Ultrasonic Pest Repeller 6 Pack,2020 Newest upgraded pest Repellent,Pest Control set of Electronic plug-in Repellent Indoor for Flea, Mosquitoes,Mice,Spiders,Ants,Roaches,none

Toxic ,Humans and pets.Its use ultrasonic frequency 22   50zhz sound wave to drive pest away and you can see a difference after 3 or  4 weeks of use.