Ultrasonic Pest Repeller Repellent - Indoor Pest Control Devices with Ultrasonic & Electromagnetic Power - Fight against Rats, Mice, Ants, Roaches, Mosquitoes, Insects, Flea, Spiders & More - Set of 4

So I have to say i was pretty reluctant that these would work. I had a huge ant problem after the Monsoons hit Phoenix. However, these Pest Controllers have worked wonders. I have two in the living room, one in each bedroom. They work awesome. I've not seen any ants for a 10 days in the house! Highly suggest you get these!!!!

I was catching a mouse about every 3 days using one mouse trap. Ordered this set and bought 6 new mouse traps. I've had these plugged in for two weeks and not one of the 6 new mouse traps have snapped. I get a lot of house spiders during the summer and have not seen one since using this product. I live in a rural area and am a bit of a skeptic. bottom line is this product must be working.

So far so good. Doing exactly what seller said it would do. Driving bugs nuts. Looking for an exit.

These devices work maybe too well. I love its use in my garage as it seems to keep the mice away, but I do not have mice in the house but I see an occasional spider. Read the small print! Initially it awakens these critters to come out of hiding and seek safer territory, which means all of a sudden you will see more spiders before you see less. As for me, I can not take seeing even one spider, and I prefer to "Let sleeping Spiders Lie", you know what I mean? No Thank You!

There has been ZERO change in the amount of spiders seen in my house. We are in week 4 and now we see wolf spiders in the house, not normal but its started getting cold, that's when they go into houses. I bought these because I live in Arizona and spiders are a problem. Issue is if you wait the full 4 weeks to see if they really work then as they say you lose your option to return them.

I ordered these on August 20th and installed them right away. I have a 1000 square foot print shop and have placed two of these in opposite sides of the room. One month later we are still infested with huge spiders (which was my entire reason for purchasing these things). Save your money. Apparently, the only way to get rid of spiders is to use chemicals and hope for the best. I cannot tell you how disappointed I am as I am VERY phobic and nothing sucks worse than screaming at work like a two year old child. After that it's pretty difficult to regain ones professionalism.

Fall usually shows a huge increase in indoorvoests seeking warmth and shelter from the changing season. This device has proven to reduce the number of household pests drastically compared to previous years without it. In addition it did not seem to bother dogs, cats or birds that live in the house or nearby.

somehow rats managed to get into my storage shed and the cats couldn't get them under tight shelves. Put out the repellants, haven't noticed any rats lately. Now the cats get them before they come in. Must be working, doesn't bother the cats on their patrols. I will leave them in the shed to keep away pests.