Ultrasonic Pest Repeller 4 Pack [2018 UPGRADED] 100% Safe Electronic Pest Control Ultrasonic Repellent, Indoor Plug in Ultrasonic Pest Repellent for Mice, Cockroach, Spider, Ant, Mosquito, Bug, Insect

I sent those pest repeller to Nicaragua mission center where they have a bugs and rats..my husband said no more bugs and rats around house.great product!!!

I really feel like these work! I’m new to Florida and have serious insect paranoia, haven’t seen a bug anywhere!

This plug in pest repellent is very simple to use, just plug it to external socket and then it starts working. I don't want to address rat problem with pesticide or trap any more, non-effective and troublesome. I think this pest control repellent is better than traditional pesticide that is harmful to human to some extent. It applies advanced ultrosonic technology and comes with LED straps to lighting at night. I love this deign concept.

I always have manage to minimize the flies issues. And I wasn’t sure if it will work but I saw the previous review are quite positive, so I want to give a go as many flies and spiders around flat. It didn’t seem to work first as I had one or two flies in my room, but after a couple days, no flies come into flat! It worked!Easy to use just plug in and play. Does a great job. Get rid of the irritating flies. Pleased with it！

Bought a set of 4. One went in my bedroom and another went in my bedroom's bathroom. I am now watching a mouse running around my bedroom. Obviously, they do not work!!