Please Read Below
The PA Department of Agriculture (Penn State University) as of January 2006 still
maintains that;
"Mice are somewhat wary animals and can be frightened by unfamilar sounds coming
from new locations. However most rodents can quickly become accustomed to
these new sounds, especially when they are heard repeatedly.
What is known about ultrasound?
It is very directional and does not travel around corners well; thus sound
shadows or voids are created.
Recent tests of commercial ultrasound devices have indicated that rodents may be
repelled from the immediate area of the ultrasound for a few days, but then return
and resume normal activities. Other tests have shown the degree of repellency
to depend upon the particular ultrasonic frequencies used, their intensity,
and the pre-existing condition of the rodent infestation. It is generally agreed
that ultrasonic sound has very limited usefulness in rodent control. The
advertising claims for many commercial devices are completely unsubstantiated
by scientific research. Since commercial ultrasonic devices are of questionable
effectiveness, they cannot be recommened at this time as a solution to rodent
control."
For years devices that produce ultrasonic sound that is claimed to control rodents
has come and gone in the markeplace. There is little evidence to suggest that
rodents' responses to non-specific, high frequency sound is any different from
their response to sound within the human range of hearing.
What is known about rodents and sound?
Usually loud sounds and novel sounds, including ultrasonic sounds which rodents
can hear, will frighten them and may cause temporary avoidance lasting from a few
minutes to a few weeks.
Ultrasound has not been shown to drive established rodents out of buildings or
areas, nor has it been proven to cause above-normal mortality in their populations.
While it is possible to cause convulsions or permanent physiological damage to rodents
with ultrasound, the intensity of such sounds must be so great that damage to
humans or domestic amimals would be likely. Commercial ultrasound pest control
devices do not produce sound of such intensity.
Ultrasound does not travel very far. It loses intensity rapidly as it leaves
the source (ultrasound device).
The above statements are not mine (RMD). They are from the PA Department of Agriculture, Penn State University. If there are any disputes with the above information, take it up with the PA Department of Agriculture. If ultrasonic devices work, prove it at Penn State.
And Finally
Folks, if you want to get rid of the mice, taking shortcuts does not work here,
or in any endeavor you choose to do.
What you need to do is roll up your sleeves, take a little time and have a
little patience. You will be rewarded with a job well done, and self
satisfaction to boot.
Thank You
To return to the Mouse Guide Home Page, click on your browser's back button.