Ultrasonic rodent devices- do they work?

Ultrasonic rodent repellers- do they work?  

In New Zealand there is a range of devices that emit ultrasonic sound waves that are claimed to repel rodents. Nice idea that you can simply plug a device in the wall and the rodents "flee" the house or dwelling as a result.

With a money back guarantee what can go wrong?

• In 2004 the ACCC in Australia ruled that these devices had been advertised with false claims. Their main false claim was

" produces an electromagnetic disturbance and an ultrasonic barrier, causing an irritating pulsation that drives pests out of a home"

The ACCC ordered the distributor to refund the nearly 240 000 customers their money back.

http://www.accc.gov.au/media-release/danoz-refund-offer-to-buyers-of-electronic-pest-repellents

• In 2012 the Advertising Standards Authority in New Zealand upheld a complaint against Pestrol for misleading advertising, that their "ultra sonic device drove rodents out of homes/businesses". The advertising standards authority stated about Pestrols ultra sonic claim

"has no basis in science or reality when applied to this product.''

http://www.odt.co.nz/news/national/194169/complaint-about-rodent-repeller-upheld

Customer experience: One of our customers purchased an ultrasonic rodent repeller. Her experience was that it made excellent (but expensive) night light when she went to the bathroom at night. After a month of no change in her rodent infestation she decided to take it back for a refund. After many phone calls and no refund she had to actually take time from her busy schedule and go into the office in Albany- Auckland. There the office lady got out the refund folder, to which my customers surprise was extremely large it was and full of many refunds. While this NZ Company did take its time and need many calls and a visit from our customer they did eventually refund her the purchase price.

ACES experience: is that  houses with thriving rodent infestations often have ultrasonic devices plugged in. To be clear the Ultrasonic rodent repellers do NOT work in the 1000s of houses that ACES has successfully treated for rodents.

ACES pest control suggests you take the advice of the Advertising Standards Authority " Greg Allan advised customers to research a product first to make sure they were getting what they paid for."

Before purchase of one these devices, why not ask for a published peer review study showing the effectiveness of the Ultrasonic Rodent repeller?