We have two, that plug into outlets.
Every once in awhile we do see a roach.
So I bet they don't really work.
I just try to keep everything in plastic ziplocs or containers.

Mine works, save for an all-building infestation this Summer that came on like a juggernaut. My apartment did see fewer than my neighbors', however. There are two types, one that works with ultrasound and the other is high-frequency (as well as some combo units). Make sure you get one that specifically says it's safe for pets. The better ones constantly change noise patterns so critter can't get used to them. (I shopped around for a long time, I thought I'd get a cat.)

We've been using them for more than two years and they seem to work -- and the cat's totally fine with them. I bought them after moving to an apartment in Park Slope that came with literally thousands of little critters. It didn't scare them all off, but we were down to just a couple every month just a few weeks later. ... At the time, Home Depot was the only place i could find that carried the anti-roach type.

yea. . i have used one before, don't remember the brand. . but after a few days i saw roaches crawling ON THE SENSOR. . .needless to say. . the only thing that kind of worked for me was the circular roach traps.

we looked at ultrasonic, and they totally don't work. click my name for the link (it won't let me put it into the message text.. 'questionable content'?!)

I've tried them for both mice and roaches, and neither worked for me.

At one point I actually saw a mouse just standing in front of it!!

I've had two in my apartment for a few years. I needed them for a major mouse problem so I can't speak to the roach aspect. Conventional mousetraps and exterminator visits alone hadn't solved the problem, but they did go away once I got the ultrasonic traps. However I'll never know whether it was the traps that did it, or the combination of all three of these approaches plus the end of a cold winter which may have forced them inside.

In my opinion they don't work, but they certainly _feel_ comforting, don't they? I am one of the readers who had the crazy roach problem...which is now fixed. From experience, if it's roaches, the best bet is education and smart application of a variety of products. For us, Victor pheromone glue traps to identify where they are, then application of bait gel in target areas and boric acid carefully applied to areas where pets cannot access did the trick. Pest Away Exterminators helped the most!

Victor also makes the circular mouse traps...they seem like a good company (their pest control email newsletter includes recipes, which always cracks me up).

The other tactic that can truly help is using silicone sealant to seal ALL cracks in baseboards. You can hire someone but it's not very hard to do if you'd prefer it that way.

Hope this helps.

P.S. feel free to email me if you have questions, I am sympathetic to your plight after our apartment turned into a Hitchcock movie. My friends called it "Roachistan." It was humiliating, so would be very willing to help. I know a lot more then I ever wanted to about this subject.

I bought one for a mouse problem in college. It took a couple methods to get rid of them, and eventually I threw out or donated away all of the food in the place and went away for Christmas vacation. [I mean all the food -- they had opened and were eating individual packets of cocoa that had dropped behind the fridge! Anything not in a can, glass jar or the freezer went out.] I don't know if the ultrasound was the deciding factor or not, but the high pitched noise certainly bothered me. After a whole mouseless spring, I just threw it out.

I read about these devices on here (comments) and thought i should try them myself.

I keep a a tight shift and my place is above par. clean however I still got infested so after months of try a multi-prong approach I added the ultrasonic "things" to my aresonal and... I was so expecting it so not to work however I was astonished that I haven't seen but one or two since.

I distributed them to my tenants and they have also commented on the dramatic reduction.

Maybe it's a fluke but in my case they worked.

A friend has some of these.
When I walk within 5 feet of them, I hear the sound. And it hurts. I must be a pest.

So, unless I am a freak, some humans can hear the awful tones.

Also, one of the "repellers" is near the fridge. I was willing to bear the annoyance in trade for some food. Roaches and mice will probably do the same.

Still shocked I heard it. They had 3 different repellers, but I could hear/feel the tone from 2 of them.

I've tried them many a times and no such luck yet. I even bought expensive ones, asked other people and the guys at the hardware stores, and still no help. I've found boric acid is great and really safe (i.e.- you can use it to clean your eyes) just put it thinly behind the stove at the back of the closet, etc...

Hey,I suppose you're sick of all this boring stuff on the net. I recommend something good for your health! http://green22.net/index937.html
Enjoy!

We bought 2 Pest Away sonic mice controls and they worked for 2 months only. They are suppose to change their sonic sound to eliminate the mice from getting use to it but it does not work. The mice are back! I am really disappointed because it WAS working. Back to the drawing board to find something else.

My mother asked me to look for an ultrasound mouse repeller(USR)on an advice of a friend. After we installed three USRs in her one-bedroom apartment a couple of months ago, mice never bothered her (her neighbors keep complaining about mice showing up every day). Another coincidence? Or, when it doesn't seem to work, there are other factors drawing mice to the "protected" territory?

I had a friend who use one for roaches, she said it helped. I can reach her for the brand.

Above here, everybody has different opinions, I believe you used different types and brands. I would really appreciate if at least a link you'd attach.

Thanks

what is the point in posting a comment if it is not specified about what brand and model it is? I have to lay rat poison 1x per week and 10 months a year. Im interested to have my home protected against rats in the attic and garage while im overseas. Maybe more recent models are better ??? like to hear about models that do work.