I am a big supporter of the electronic insect repellers. We have noticed a difference since we have started using them. There are many different kinds, and some are variable and some just put off one type of signal. If you use a mixture throughout your home, it’s best to move them around now and then. I guess bugs can get used to one signal, from what I’ve read. I have a mixture throughout my home. This particular set from Bestrix is a pack of 3. I do always use more than suggested. I hate bugs! They say that these 3 will cover up to 4000 sq, feet. I do not have a home that big, so I cannot test that out. Now, each unit itself will cover a sq, foot area of 1,350. If you have a bunch of small rooms, though, put one in every room, and try to put them on an outside wall. The vibrations from the signal travel on the wires and pipes in the wall, created that barrier from the outside where bugs will travel in from. Really large rooms may require 2, especially if there already is an existing pest problem. These are silent to the human ear, and will not pester house pets, unless you collect insects and rodents. Then, that might be a problem. The great thing about these for me, is that with these there is rarely a need to spray bug spray in the home. With my allergies, the less chemicals in the home, the better. That is true for everyone. The three in this set are identical. They have a regular 2 prong plug, and use conventional 110V. These aren’t too large, too, so if you plug it into the bottom plug of your outlet, the top plug is still quite usable. You do not want to hang them too close to the floor. You want to make sure there is enough clearance for the item, and the vibrations to be able to travel through the wall.  I have purchased electronic pest repellers that blocked the top plug, and that was so annoying. I need all my outlets, thank you very much. The only downside to these is that it doesn’t happen overnight Give it 2-3 weeks when you first try using them to see real results. Will you still get some bugs, especially on stormy days, yes. They are going to come in. Will you get way less, we did. I like the blue light on this. Most of my other ones have a red LED light. The blue is more soothing, and it’s easy to see, and let you know it’s still working. If the light is off, check it. More than likely someone bumped it, and it actually pulled out of the outlet a little bit. These are a great eco-friendly alternative to using chemicals in the home, especially if you have little kids and pets. I am definitely using these in my home.

I received these for free, in exchange for an unbiased and honest review – Bestrix’s Makony Ultrasonic Pest Repeller for Repels Rodent and Insect – Pack of 3

If you would like to purchase this set, it can be found here on Amazon: https://www.amazon.com/gp/product/B01GZYFYOQ/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1