According to the producer, the most effective frequency range lies between 10 and 12 kHz for birds, between 20 and 30 kHz for rodents, and between 30 and 40 kHz for insects.
Instead of catching mice, like mouse traps do, ultrasonic devices emit sound waves at a frequency that mice find absolutely unbearable. Ultrasonic devices with a sound frequency of 10,000 Hz are most effective at keeping mice away. It's best to buy several of these devices and replace them every 3 weeks.
Ultrasonic Sound Devices: How They Claim To Repel Rodents
Most sound repellents can produce sound frequencies up to 65,000 Hz, which fall in the average hearing capacity of mice and rats. This sound is above the average level of human hearing but still repels rodents due to their extremely sensitive hearing.
Rodents do not like any noise greater than 30 kHz. Sound greater than this intensity will irritate these pesky creatures.
Whilst such high frequency sounds cannot be heard by human ears, rodents can hear sounds at much higher frequencies, and, if the blurb on the box of these products is to be believed, such frequencies are deeply unpleasant to mice and other pests.
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.
Sounds That Repel Mice
Mice prefer to be alone, away from humans and animals, so being around a lot of noise is not ideal. High-pitched noises may affect rodents, but research has shown the effects are often overcome within a day or so, regardless of whether the frequency is variable, intermittent, or random.
This isn't just insufferable to rodents, but the product claims to repel insects as well. So, do ultrasonic rodent repellents really work? The short answer is no, ultrasonic rodent repellents don't work. Some homeowners have noted an immediate effect at first, but over time the rodent problem will continue to persist.
Aromas like peppermint, spearmint, and eucalyptus repel rodents. Set up a diffuser or use cotton balls to spread their smell throughout your room. Not only will they keep mice away—they'll also make your room smell great. Ammonia, found in many cleaning products, is another smell that rodents hate.
One example is a 2013 study that successfully used sound to deter bark beetles—including a playback of that species' own stress call. However, most scientific studies have found few or no signs that commercially available ultrasonic pest repellers actually work.
Ultrasonic sound waves have a frequency higher than what human ears can hear, but invading species can detect them. The sound is meant to irritate pesky critters and prevent them from making homes near the source of the noise.
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.
High-frequency stable noise can cause pathological damage in brain, liver, spleen, and heart tissues of female rat at a various degree.
While keeping the lights on is not an effective method of mouse control, it does deter mice to a certain degree. Having lights on the outside of the house will make mice think twice before moving in.
Natural smells like peppermint oil, eucalyptus, and citronella can also repel mice and force them out of the cracks in the walls. These solutions are mainly used as short-term preventive measures, but they can also be helpful if combined with other mice control techniques.
Though mice have the ability to climb on beds, it is rare that they actually do so. Mice are prey animals, so they tend to avoid large creatures that could be potential predators as much as possible. You may worry that while you are in bed sleeping, you may look less threatening to a mouse.
Yep, mice will crawl on sleeping people. If you did discover any evidence of mice in your bedroom, likely, a mouse has previously crossed your path while you slept. And if it's occurred before, it's expected to happen again. On the other hand, Mice aren't going to stay on your bed if they're dashing over it.
Peppermint oil and mice
Nope! It will make your home smell good, but it certainly won't get rid of your unwanted lodgers. Peppermint oil is assumed to be a great mouse repellent because, in high concentrations, it can be quite potent and mice have a very sensitive sense of smell.
Scent-based repellents such as peppermint essential oil are one of the most effective rodent control methods that utilize strong smells to repel mice. So how do peppermint oils help trap mice and rats? Pure peppermint oil contains a strong menthol scent that's said to irritate a rodent's sense of smell.
However, they are not typically interested in crawling on people while they are sleeping. In fact, mice are generally afraid of humans and will do their best to avoid contact with us. If you do happen to find a mouse in your bed, it is likely that the mouse has been displaced from its nest or is looking for food.
Mice won't disappear by themselves
Unless you change your habits to deprive mice of their food, wipe out the existing population and proof your property to stop them coming back, you'll always be sharing your home with disease-spreading, food-stealing mice.
#1 Baking Soda
Rodents can't expel carbon dioxide as humans can, so when the bicarbonate in the baking soda reacts with the acids in the rodent's stomach and produces carbon dioxide, the gas builds up inside the digestive system. Eventually, it will cause a blockage or rupture and kill the mouse.