Lonaoo via Amazon offers its Lonaoo Ultrasonic Pest Repeller 2-Pack for $29.99. Coupon code "43HJ9ACC" cuts that to $16.49. With free shipping, that's $3 under last week's mention of a similar set, $14 off, and the best price we could find. They each cover an area of up to 1,290 square feet. Deal ends June 15.