It doesn't. The FTC has info on these scams at http://www.ftc.gov/opa/2001/05/fyi0128.shtm. Enter "Pest Repeller" in the FTC search window for more info.
None of them work long term.
Electronic devices are not effective long term.
Electronic devices are not effective long term.
No, any rodents within the repeller's range will also be affected by it, sadly.
I don't recommend it-they are not effective long term
Yes it's just ultrasonic sound, but they usually don't work long if at all so I would advise against purchase.
Yes, Riddex electronic pest repeller repulses squirrels (Sciuridae family). But it requires a certain range of effectiveness, beyond which it has no impact and within which other controls -- such as removing food sources and sealing cracks -- need to be implemented.
No, don't buy any of the electronic repellers. Although some provide short term benefits, none has been proven thus far to work long term. Many of the big pest cos. have already tried them & no one is using them.
You can buy them off Ebay. They are cheaper and they ship fast!
Emission of high-frequency sounds whose cycles are digitized to random variations and whose pitches discourage cockroaches, mice, and rats from feeding and nesting in attics and garages is the way in which the Ultrasound pest repeller works. Efficacy nevertheless requires an absence or paucity of furniture and outlets as well as a lack of such domesticated animals as chinchillas, gerbils, guinea pigs, hamsters, minks, and tarantulas whose behavior and hearing will be impacted.
No. It can only make the animal suffer. This devise gives off an electrical pulse that these small animals may be able to feel. Read the label on this product before using around the guinea pig.
It works but not in an area as big as specified.