Author: Marcus Wilson • 11/11/2010 This article was co-published from Physics Stop-View original source

I saw an advertisement in the newspaper yesterday about an "ultrasonic and electromagnetic" mouse and mouse repeller.

This interests me very much. Ultrasonic bits seem to make sense-I don't know much about the physiology of rodent ears, but I would like to believe that they can hear higher frequency sounds for us as well as dogs and cats (advertised, not affected).) This is I am interested in the electromagnetic bit.

Some Google searches gave me some explanations that sounded scientific but not very useful-for example, "Electromagnetic function uses every cable in a building to carry and transmit signals, and pests can detect signals up to 1 meter away from any cable. , Even interior walls and ceiling spaces"

A cable that transmits electromagnetic signals? This is perfectly reasonable-the electrical signal on your house's power supply is the way your power company can remotely turn on and off the thermos' power supply, on one hand. But what kind of signal, what effect does it have on our rodent friends, and why does it not have the same effect on us?

"This type of repellent also sends pulses through the existing wiring in the house or property, and by changing the electromagnetic field, it helps create an environment in the walls, floors and ceilings where pests would rather leave."

This provides a little more information, but still has pseudo-scientific significance. Googling it again, I found that this phenomenon is not only used to drive away rodents.

"This will aggravate the spider's nervous system, drive them out of hiding, and exile them forever."

So we are now "aggravating the nervous system." I quickly searched for journal articles on spiders, nervous system and electromagnetic waves on ISI Web of Science, and I found nothing. But what I know is that there are many studies on mobile phones and people, which shows that electromagnetic waves have little effect on people (unless you have access to X-rays and gamma rays), so I want to know why other animals are different .

Anyway, all in all, I am very interested. Does anyone know what these machines are 1. Actually use your home wiring, and 2. What are the effects on mice/rats, and 3. Why do we react differently to cats/dogs? (Remember, I am confused by the electromagnetic bit, not the ultrasonic wave.)

Maybe it is combined with a lot of rat pellets mixed with iron filings🙂

Well. Spiders don't have much nervous system, and I have never read that it is susceptible to electromagnetic waves.

We injected the spiders with anesthetics to see how things like LSD affect network building skills (drug-addicted spiders do not make coherent webs), and shoot them into space on the space shuttle to see how the lack of gravity will do What impact does it have on the web.

I feel very skeptical.

Same as above. I have a feeling that Ben Goldacre may have debunked these things, but it would be too bad if I could find it now. If these machines actually do a lot of things with wiring, I would be surprised, given that we all wire the same way, there is no reason why rodents are affected when larger mammals are not available. (The frequency of the sound may be different now.)

Yes, it sounds like the bad science Ben Goldacre would accept-if he had one, I haven't seen it yet. I would love to buy one and have an electronics major take it apart and see what it is doing (if any).

This will be a pretty good project, won't it?

If pulses are routed through your house, what can stop them from running down the street and entering the house next door, killing the neighbor’s precious pet spider collection?

Some devices seem to be good at repelling small insects, especially ants. These are ultrasonic and do not make any claims about any form of magnetism. This is good, because radiated magnetism may be harmful to human health, and ultrasound has not been found to cause any harm to the human body. I suggest searching for "insect repellent" on trademe may be instructive

Maybe I should try one. At present, the ants in the house are a real annoyance. Unlike rodents, cats will not catch them for you. You said that "radiation magnetism may be harmful to human health." The effects of electromagnetic waves and health have been studied a lot (although in many cases it is really difficult to do this research well-for example, people who live under power lines tend to have lower incomes-because houses under power lines are cheaper- -And low income can cause health problems in other ways). Unless we are talking about very high frequency waves (for example, sunburn due to UV or X-ray and gamma rays damage), there is no clear evidence of long-term health problems—at least I don’t know. Note: If the magnetic field is radiated, then the electric field will also be radiated-the two propagate together-so you have an electromagnetic wave.

This should help make false claims at unreasonable prices. Please check!

Complaints about rodent insect repellents are supported. Home »News» National Thursday, January 12, 2012 News: National TV commercials for ultrasonic mice and mouse insect repellents were filed with the Advertising Standards Bureau last year regarding 280 misleading products One of the complaints. The advertisement for the Pestrol Rodent Free pest control device showed images of rats gnawing on wood and wires, promising to use electromagnetic pulses to eliminate customers’ “dirty unwelcome intruders”. However, the ASA ruled that the advertiser Lifestyle Logic Ltd was unable to verify these claims and were therefore misleading. Hilary Souter, ASA's chief executive, stated that of the 280 complaints, 73 were upheld or resolved-after advertisers admitted the error. She said complaints about the authenticity or exaggeration of advertisements are "quite common." "According to our system, if you make a claim and are challenged by complaining to us, advertisers need to confirm the claim. If they can't, they will violate the Act." Other complaints against products include weight loss patches and male wake-ups The patch’s Quantium Solutions is not supported by research, and Goldair heaters can absorb the cold in the air but fail to heat the room as claimed. The pest control advertisement stated that the product uses "ultrasound to force them (pests) to leave." However, B. Clark opposed the advertisement, "the reason is that it is not a true introduction to the product's capabilities." The complainant found that the company's statement about how its products work with electromagnetic pulses and ultrasonics was misleading. "I think the above statement has no scientific or realistic basis when applied to this product." The advertiser Lifestyle Logic Ltd argued that the rodent repeller combines electromagnetic and ultrasonic technology to repel walls, ceilings and rat areas in open spaces. . The company said: “Based on the information and feedback received from a wide range of customers, Pestrol 4 in S Rat and Mice Repeller performs very well and can fulfill its advertising tasks.” It said that the product’s return rate is also “close to At zero". However, the Complaints Committee stated that the advertisement violated Article 2 of the Code of Ethics because it was misleading and the claims made could not be substantiated. The advertisement's on-screen statement stated that it is a "proven technology that can repel mice and mice" and is "guaranteed to be effective." The Complaint Committee stated that the advertiser did not provide test or research evidence to prove its claim and therefore "may mislead or deceive consumers." The committee stated that this also violated basic principle 4 of the code of ethics because the advertisement was not prepared with a sense of responsibility to consumers. Committee spokesperson Greg Allen advised customers to research the product first to make sure they got what they paid. He recommends researching the product online to see if anyone else has complained about it, and if possible, check its statement and ask the retailer's questions before handing over the money.

How interesting-especially how the complaint committee took a very scientific approach and asked for evidence to support the claim-and no one thought the product might be misleading.

When rats attacked my house, I decided to use an electronic insect repellent. First of all, it does work. Secondly, I don't want to see any dead bodies in my garden. I have a young daughter, she may be scared. There are many different insect repellents in the store. I read this guide on "how to choose the best electronic insect repellent". Finally, the rodent left my home.

Is it an ultrasonic rejection device? When a mouse (and a few mice) broke into my garage, I just walked around cautiously and took out all the food (there is a big bag of old cat food on the back of the shelf, we forgot it after our cat died).) That also succeeded.

Thank you for providing this information, Marcus. I have never seen any evidence that these devices are effective. In fact, everything I have read believes that these devices are not scientifically effective. However, we were driven crazy by rats on the ceiling of the holiday house. In desperation, we bought one of these devices (we will try voodoo, anything that can disperse them and stop the noise), and the mouse left. Maybe they don't like us either. Hopefully someone will do proper research on these devices before I weaken and buy another one next winter.

I predict that these statements supporting reviews of this device are nothing more than marketing trolls. I have something like this. The mouse in my house seemed to go crazy after I bought it for a few days, but now it resumes its normal activities. Is it the ionized air generated by the device? Or electromagnetic pulse? Based on the fact that the rat is still my roof, I would like to think that all the effects so far are due to my over-attention to the rat’s activities, rather than the actual change in its habits. I didn't believe it until it disappeared from my residence.

These things don't work at all, this company is dishonest, and I avoid dealing with them altogether. Mr. John fenning once served in the business committee. Avoid them at all costs

@Marcus Wilson – Old thread – Comment on the lack of clear evidence that “radiation magnetism” is harmful to health: I want to know if you have ruled out microwave ovens, for example, it can use 915 MHz or 2.45 GHz electromagnetic radiation... According to Wikipedia, Westinghouse Electric used 60 MHz in a demonstration in 1933 (https://en.wikipedia.org/wiki/Microwave_oven)...

These devices can definitely drive rodents out of their nesting walls so they can be trapped. Nevertheless, you still need the traditional catch trap.

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