Many customers ask us if the plug in ultra sonic deterrents are effective , in a nut shell NO. If they were effective then we would not have a job ! they would also be fitted as standard in all food processing sites and restaurants through out the world
here is an exert form the U.S by the equivalent of the UKs Trading standards
Between 1985 and 1997, the FTC brought law enforcement actions against six companies that allegedly made false and unsubstantiated claims about the effectiveness of ultrasonic devices in controlling rodent and insect infestations. Each of those cases was resolved by consent order. In those prior actions, the FTC challenged the following types of claims:
- Eliminates rodent infestations;
- Repels insects;
- Serves as an effective alternative to conventional pest-control products;
- Increases or assists the effectiveness of other pest-control methods;
- Eliminates fleas on dogs or cats; and
- Scientific tests prove product effectiveness.
Prior FTC complaints alleged that any reaction by rodents to ultrasound would be temporary at best because rodents become accustomed to ultrasound and will return to their nesting or feeding areas even in the presence of an ultrasonic device. Furthermore, previous FTC complaints alleged that ultrasound devices do not control insects.The warning letters urged manufacturers and retailers of ultrasonic pest-control devices to examine their advertising and ensure they have competent and reliable scientific evidence to support claims that a product eliminates or repels certain pests. Staff advised the manufacturers and sellers that if they have misrepresented the benefits of their products, or if their claims are not properly substantiated, they may be subject to legal action. FTC staff will continue to monitor the advertising of ultrasonic pest-control devices to ensure that claims made to consumers are not false or deceptive.
The picture attached also show mouse droppings right next to one of the devices. Remember the key to pest control is Exclusion -restriction and then destruction
Guardian Pest Control can help with all these key points , if you have rodents in the property then give us a call