For those who are troubled by the mischief of cats! !
You can stop pranks by emitting sounds at frequencies that cats dislike.
This app has the following advantages.
・ Since it does not emit loud sounds such as plosives, there is no need to worry about cats panicking and rampaging or getting injured.
・ Since it does not harm your body such as unpleasant odors, it is safe for your health.
However, please note that it is disliked if used frequently.