In summary, ultrasonic pest repellers emit high-frequency sounds that manufacturers claim reduce household pest infestation, but laboratory tests have shown that the majority of such devices do not work as advertised, in violation of FTC guidelines.
While the idea of using high-frequency sound to deter pests is intriguing, studies have consistently shown that these devices have limited to no impact on most pests, including rodents and insects.
The smells of some plants, such as eucalyptus, wormwood and mint, are unattractive to rodents. Sound-based repellents are capable of emitting sound at a register too high for humans to recognize.
However, the question remains: Are these ultrasonic devices an effective pest control method? The answer in our experience: Sadly, no. There are several reasons for the failure of these devices for pest management purposes.
These devices are effective in keeping the rodents away due to the changing frequencies. The intense auditory frequency is a stressor for the rodents and create a hostile environment for them. The more complex the signal, the more irritating to the rodents.
Any new or unexpected noise will frighten them and send them scurrying. However, once rodents get used to a sound, they will no longer fear it. This means that ultrasonic repellents can be effective at first, but if an area has plenty of food and provides shelter, the rats will have a great incentive to return.
Outdoors, restrict their shelter by rat-proofing all buildings in the area and removing outside shelters like appliances, junk piles, old fences and walls. Keep the property, including alleys and yards, clean and trash-free. Pile wood and other stored items at least 18 inches above the ground and away from the walls.
If you use the peppermint ball method, you'll need to replace the cotton balls consistently and use fresh oil with each new ball. For existing mice problems, replace the peppermint balls twice a week or more. However, if you're only preventing rodents, you may need to refresh the cotton balls every two weeks.
What Do Pest Control Companies Use for Mice? Mice can be controlled with a combination of traps and rodenticides. Snap traps, electronic traps, and anticoagulant baits are common.
Peppermint oil — Essential plant oils like peppermint, rosemary, citronella, sage and lavender have strong botanical scents that rats dislike. One customer successfully repelled a rat by stuffing a peppermint oil soaked tissue into the rat hole chewed into the wall. The rat appeared to never come back.
Rodents do not like the sharp scent of vinegar, so it's believed that it can be an effective rodent repellent. Common advice is to soak cotton balls with vinegar and place them near areas where you think rodents are entering your home and to use vinegar as a cleaning solution.
To discourage mice, remove all food sources by storing grains, pet food, and other dry goods in metal containers. Make sure mice won't find nesting material by storing all soft, fluffy material like fabric, rugs and blankets in heavy plastic or metal boxes.
Some are sold specifically to repel rodents. However, there is little data that these devices repel insects or are effective in rodent control. Rats and mice emit high-pitched sounds and may communicate using these sounds. Devices that use sound that humans can hear typically have no effect on the rodents.
Peppermint oil is said to deter rats from entering treated areas. In high concentrations, peppermint oil may exhibit some repellency.
Outdoors, rats face a variety of predators. In these environments, large birds of prey — including hawks, falcons and owls — feed regularly on rodents. Owls are particularly formidable predators, as their nocturnal behavior ensures that they are most active when rats go out in search of food.
Peppermint. Prepare to turn your rat problem into a minty-fresh solution! Rats may have a perceptive sense of smell, but they can't stand the refreshing scent of peppermint. This natural and aromatic repellent works wonders in deterring these unwanted pests.
Rats are nocturnal animals that prefer to move around under the cover of night; however, sleeping with lights on will not keep rats away. While it makes logical sense that rats would not like being in the light, it is not enough to discourage them from moving around your home at night.
The best way to get rid of rats or mice is by using traps. If using spring loaded traps for rats, bait three of them in a row without setting them. Bait with dried fruit, peanut butter mixed with oats, or cheese.
Customers say the Victor Scent Away Natural Rodent Repeller packs are easy to use and have a pleasant mint scent. While some users report success in deterring mice, many others found the product ineffective, with rodents often ignoring the packs or even chewing through them.
However, there's no way to prove these pests weren't eliminated through other environmental factors like a natural predator or a neighbor setting traps. Studies have shown time and time again that there is no strong evidence to suggest that ultrasonic pest repellers are effective.
Some common disadvantages of conventional ultrasonic sensors include limited testing distance, inaccurate readings, and inflexible scanning methods.