Just because you can buy something doesn’t mean it works. You can buy a home gym, for example, but it won’t make you thin. However, there are some things you can buy that won’t work even if you actually try to achieve a result.

You buy devices that control pests using ultrasonic frequencies – they are purported to work for mosquitoes, cockroaches, ants and now there are new versions targeting bed bugs, since those were in the news a lot.

A new paper reports the results of tests of four commercially available electronic pest repellent devices designed to repel insect and mammalian pests by using sound. 

read more

via Science 2.0 Read More…

Advertisements