Title: Shockingly Tested Roach Repeller Compared for Best Indoor Use In our quest to banish pests without harmful chemicals, we examined the Ultrasonic Pest Repeller Control Plug-in 2 Pack. We plugged these Electronic Insect Defenders into various corners of our home, focusing on their effectiveness against cockroaches, ants, mice, and bedbugs. The ultrasonic sound waves emitted are meant to repel unwanted critters, but our results were mixed. While we noticed a slight decrease in ant activity within a week, cockroaches and flies remained stubbornly present. The device’s compact design and silent operation work well for continuous use, though we wish it had stronger coverage. Ultimately, it’s a decent option for minor infestations but may not be our top pick for severe pest problems.