At night it is quiet ....

Finally I can sleep at night.
Mat against the bedroom door (the only room where the cats are not purely must) place and leave it turned on for a few days.
Electrocution is noticeable but not too hard, you erschrikt as a human, I would say.
On the subject of animal welfare, etc ... when I see how my cats scratching and biting each other, the mat is the lesser evil ...