Bell+HowellBell and Howell Ultrasonic Pest Repellers with Extra Outlet - 3 Pack

No me gusta pues aunque debe repeler los insectos, vi uno caminando abajo del aparato. No lo recomiendo, prueba otra opción

TL;DR: worked to chase spiders/pests from my apartment.I bought this product because I have had a number of pests that this product claims to combat without the use of pesticides. In particular, I have seen roaches (it is an urban apartment, roaches happen) and a cluster of grass spiders. Of the two, I really hate the roaches, but the grass spiders weird me out. In particular, there was one, let's call it Frank, that chilled in my bedroom and watched me play video games. For those of you that don't know, grass spiders look a lot like wolf spiders but build a web that is like a funnel along the ground. They use this to catch prey by running out at it and striking when something bumps the web. So they are fast and large, not a combo I like in spiders.The Test, or Removing Frank.Frank had to go. He'd just sit there and watch me and it was creepy. I know, you may say, "He was spider-bro, that's cruel!", but Frank wasn't a bro. He was garbage at catching bugs, and had a knack for running out to look at me whenever I was walking around. He was, however, the perfect test subject as I knew where he lived and would be able to tell if this product persuaded him to leave. For further tests, I vacuumed/cleaned to remove any bug carcasses. This would tell me if any other bugs were around and dying in my apartment. I plugged the boxes in around my apartment and waited.The result:Frank is gone. He actually didn't show up to watch me play games by about 1-2 days after plugging in. I didn't check if his web was empty until a few weeks after, because I really didn't want to be wrong. He was gone. Additionally, I've not seen a roach since the boxes went in and there have been no new corpses on the carpet. The only bug I've seen in a few weeks was a single pill bug (or rollie-pollie https://en.wikipedia.org/wiki/Armadillidiidae). It was moving quickly out of the apartment and seems to be one of the last stragglers.Pros:The product works. Spiders are gone and no new bugs have shown up. No sign of roaches.The product is easy. Literally plug and play. The only odd thing is that they flash red lights which initially made me think they had a bad connection.The product has no chemicals to degrade and is silent to humans. I don't have to add anything to it or deal with annoying noises.Cons:The only possible drawback is the flashing red light. Sometimes it surprises me. If it bugs you, you can just cover it with a piece of tape and you won't even notice it.

We've had ants in our house for months before my parents recommended this pest repeller for us -- and it has worked wonders! To us and our 2-year-old, the repellers are no trouble, they just make very slight clicking noise a couple of times a minute. To the ants and small bugs whose names I do not know (they have 2 antenna-like things on the rear end), they seem to be murder -- both are gone completely, haven't seen a single one now in weeks. It doesn't work wonders -- only works in a room, for example, and does not kill bugs or drive away flies -- but it was perfect for ant repelling, the thing we needed it most. Very happy with this product.

My car started smelling fried food one day driving. I thought the truck in the front was converted to burn discarded frying oil. Alas the smell did not go away. When I arrived at my parking lot, opened the engined compartment. Lo and behold the engine was filled with dog food! Funny story really.Turns out since I was away for a few days and our little rodent friends opened a little hole in the dog food bag in the garage, and then carried a massive amount of dog food inside my engine compartment. It is amazing if they carried them one by one.Anyway I bought this and installed it in two ends of the garage. i can still use the outlets through the repeller's outlet. Free of mice for about a year. Does not work for bugs or spiders though, thus four stars.

I am so pleased I tried this within the return window. They are unusable for me because every time the red light flashes there is a tick noise. I'm not sure why they even have the light on it anyways, but if you have acute hearing or need a repellent in the room you sleep in. you should be aware of this.I do not know if it works on bugs because it was such an annoying noise that it was plugged in less than 3 minutes.