Ultrasonic Pest Repeller,Powerful Mouse Repellent Electronic Mosquito 4 PCS
[𝐖𝐈𝐃𝐄 𝐄𝐅𝐅𝐄𝐂𝐓𝐈𝐕𝐄 𝐂𝐎𝐕𝐄𝐑𝐀𝐆𝐄]The pest repellent gets coverage up to 1500 square feet. You should use one unit per a room to see the best result because the ultrasonic cannot pass through walls or solid objects.